--- loncom/interface/lonmsgdisplay.pm	2011/05/12 21:56:13	1.157
+++ loncom/interface/lonmsgdisplay.pm	2021/11/30 15:55:37	1.194
@@ -1,7 +1,7 @@
-# $textareaclass The LearningOnline Network with CAPA
+# The LearningOnline Network with CAPA
 # Routines for messaging display
 #
-# $Id: lonmsgdisplay.pm,v 1.157 2011/05/12 21:56:13 raeburn Exp $
+# $Id: lonmsgdisplay.pm,v 1.194 2021/11/30 15:55:37 raeburn Exp $
 #
 # Copyright Michigan State University Board of Trustees
 #
@@ -102,6 +102,8 @@ use HTML::TokeParser();
 use Apache::Constants qw(:common);
 use Apache::loncommon();
 use Apache::lonhtmlcommon();
+use Apache::longroup;
+use Apache::lonnavmaps;
 use Apache::lontexconvert();
 use HTML::Entities();
 use Apache::lonlocal;
@@ -120,21 +122,23 @@ my $startdis='';
 
 sub folderlist {
     my ($folder,$msgstatus) = @_;
-    my %lt = &Apache::lonlocal::texthash(
+    my %html_lt = &Apache::lonlocal::texthash(
                 actn => 'Action',
                 fold => 'Folder',
                 show => 'Show',
                 status => 'Message Status',
                 go   => 'Go',
+
+    );
+    &html_escape(\%html_lt);
+    my %js_lt = &Apache::lonlocal::texthash(
                 nnff => 'New Name for Folder',
                 newn => 'New Name',
-                thfm => 'The folder may not be renamed',
-                fmnb => 'folder may not be renamed as it is a folder provided by the system.',
-                asth => 'as this name is already in use for a system-provided or user-defined folder.',
-                the => 'The',
-                tnfm => 'The new folder may not be named',
+                fmnb => 'Folder may not be renamed as it is a folder provided by the system.',
+                asth => 'Requested name already in use for a system-provided or user-defined folder.',
 
     );
+    &js_escape(\%js_lt);
 
 	# set se lastvisit for the new mail check in the toplevel menu
 	&Apache::lonnet::appenv({'user.mailcheck.lastvisit'=>time});
@@ -182,16 +186,16 @@ function folder_choice(targetform,caller
         if (targetform.folderaction.options[targetform.folderaction.selectedIndex].value == 'rename') {
             for (var i=0; i<permfolders_keys.length; i++) {
                 if (permfolders_keys[i] == targetform.folder.value) {
-                    alert("$lt{'the'} '"+permfolders_vals[i]+"' $lt{'fmnb'}");
+                    alert("'"+permfolders_vals[i]+"' -- $js_lt{'fmnb'}");
                     return;
                 }
             }
-            var foldername=prompt('$lt{'nnff'}','$lt{'newn'}');
+            var foldername=prompt('$js_lt{'nnff'}','$js_lt{'newn'}');
             if (foldername) {
                 targetform.renamed.value=foldername;
                 for (var i=0; i<allfolders.length; i++) {
                     if (allfolders[i] == foldername) {
-                        alert("$lt{'thfm'} '"+foldername+"' $lt{'asth'}");
+                        alert("'"+foldername+"' $js_lt{'asth'}");
                         return;
                     }
                 }
@@ -207,7 +211,7 @@ function folder_choice(targetform,caller
         if (newname) {
             for (var i=0; i<allfolders.length; i++) {
                 if (allfolders[i] == newname) {
-                    alert("$lt{'tnfm'} '"+newname+"' $lt{'asth'}");
+                    alert("'"+newname+"' -- $js_lt{'asth'}");
                     return;
                 }
             }
@@ -222,34 +226,39 @@ function folder_choice(targetform,caller
 
     $output .= '
 <form method="post" action="/adm/email" name="folderlist">
+   <div class="LC_columnSection"><fieldset>
+   <legend>'.&mt('Folder Actions').'</legend>
    <table border="0" cellspacing="2" cellpadding="8">
     <tr>
-     <td><b>'.$lt{'fold'}.'</b><br />'."\n".
+     <td><b>'.$html_lt{'fold'}.'</b><br />'."\n".
          &Apache::loncommon::select_form($folder,'folder',\%formhash).'
      </td>
-     <td><b>'.$lt{'show'}.'</b><br />'."\n".
+     <td><b>'.$html_lt{'show'}.'</b><br />'."\n".
          &Apache::loncommon::select_form($env{'form.interdis'},'interdis',
 					 \%show).'
      </td>
-     <td><b>'.$lt{'status'}.'</b><br />'."\n".
+     <td><b>'.$html_lt{'status'}.'</b><br />'."\n".
        &Apache::loncommon::select_form($msgstatus,'msgstatus',\%statushash).'
      </td>
-     <td><b>'.$lt{'actn'}.'</b><br />'."\n".'
+     <td style="padding-right: 40px;">
+         <b>'.$html_lt{'actn'}.'</b><br />'."\n".'
          <span class="LC_nobreak">'.
          &Apache::loncommon::select_form('view','folderaction',\%actions).
-         ' <input type="button" value="'.$lt{'go'}.
+         ' <input type="button" value="'.$html_lt{'go'}.
          '" onclick="javascript:folder_choice(this.form,'."'change'".');" />
          </span>
      </td>
-     <td><b>'.&mt('New Folder').'</b><br />'."\n".'
+     <td style="border-left: 1px solid;padding-left: 40px;">
+         <b>'.&mt('New Folder').'</b><br />'."\n".'
          <span class="LC_nobreak">
          <input type="text" size="15" name="newfolder" value="" />
-         <input type="button" value="'.$lt{'go'}.
+         <input type="button" value="'.$html_lt{'go'}.
          '" onclick="javascript:folder_choice(this.form,'."'new'".');" />
          </span>
      </td>
     </tr>
    </table>
+   </fieldset></div>
 '."\n".
     '<input type="hidden" name="sortedby" value="'.$env{'form.sortedby'}.'" />'.
     '<input type="hidden" name="renamed" value="" />'.
@@ -261,8 +270,8 @@ sub get_permanent_folders {
     my %permfolders = 
 	&Apache::lonlocal::texthash(''         => 'INBOX',
 				    'trash'    => 'TRASH',
-				    'critical' => 'Critical',
-				    'sent'     => 'Sent Messages',
+				    'critical' => 'CRITICAL',
+				    'sent'     => 'SENT MESSAGES',
 				    );
     return %permfolders;
 }
@@ -378,7 +387,7 @@ sub deletefolder {
     my ($folder)=@_;
     my %permfolders = &get_permanent_folders();
     if (defined($permfolders{$folder})) {
-        return &mt('The folder "[_1]" may not be deleted.',$folder); 
+        return &mt('The folder "[_1]" may not be deleted.',$permfolders{$folder}); 
     }
     my %userfolders = &Apache::lonmsg::get_user_folders();
     if (!defined($userfolders{$folder})) {
@@ -543,7 +552,7 @@ sub discourse {
        $result .= '<fieldset id="LC_activeusers"><legend>'
                  .$bcc_curr_hdr
                  .'</legend>'
-                 .'<form name="activeusers">';
+                 .'<form name="activeusers" action="">';
        $result .= $tmptext.'</form></fieldset><br />';
        if (ref($statushash) eq 'HASH') {
            $statushash->{'active'} = 1;
@@ -564,7 +573,7 @@ sub discourse {
        $result .= '<fieldset id="LC_previoususers"><legend>'
                  .$bcc_prev_hdr
                  .'</legend>'
-                 .'<form name="previoususers">';
+                 .'<form name="previoususers" action="">';
        $result .= $tmptext.'</form></fieldset><br />';
        if (ref($statushash) eq 'HASH') {
            $statushash->{'previous'} = 1;
@@ -587,7 +596,7 @@ sub discourse {
        $result .= '<fieldset id="LC_futureusers"><legend>'
                  .$bcc_future_hdr
                  .'</legend>'
-                 .'<form name="futureusers">';
+                 .'<form name="futureusers" action="">';
        $result .= $tmptext.'</form></fieldset>';
        if (ref($statushash) eq 'HASH') {
            $statushash->{'future'} = 1;
@@ -662,7 +671,7 @@ sub disgroup {
                     }
                     $r->print('<fieldset>'.
                               '<legend>'.$lt{$status}.'</legend>'.
-                              '<form name="'.$formname.'">'.
+                              '<form name="'.$formname.'" action="">'.
                               '<span class="LC_nobreak">'.
                               '<input type="button" value="'.&mt('Check All').'" '.
                               'onclick="javascript:toggleAll('."this.form,'check'".')" />'.
@@ -766,22 +775,36 @@ sub groupmail_header {
               text=>"Groups",
               title=>$brtitle});
     }
-    &Apache::lonhtmlcommon::add_breadcrumb
-        ({href=>"/adm/$cdom/$cnum/$group/smppg?$refarg",
-          text=>"Group: $description",
-          title=>"Go to group's home page"},
-         {href=>"/adm/email?compose=group&amp;group=".
-                "$env{'form.group'}&amp;$refarg",
-          text=>"Send a Message in a Group",
-          title=>"Compose Group Message"},);
+    my $view_permission =
+          &Apache::lonnet::allowed('vcg',$env{'request.course.id'}.($env{'request.course.sec'}?'/'.$env{'request.course.sec'}:''));
+    my $navmap=Apache::lonnavmaps::navmap->new();
+    my $grouppagelink = &Apache::longroup::get_group_link($cdom,$cnum,$group,$navmap,$view_permission,$refarg);
+    if ($grouppagelink) {
+        &Apache::lonhtmlcommon::add_breadcrumb
+            ({href=>$grouppagelink,
+              text=>&mt('Group').": $description",
+              title=>&mt("Go to group's home page"),
+              no_mt=>1,
+             },);
+    } else {
+        &Apache::lonhtmlcommon::add_breadcrumb
+            ({text=>&mt('Group').": $description",
+              no_mt=>1,});
+    }
+    &Apache::lonhtmlcommon::add_breadcrumb   
+          ({href=>"/adm/email?compose=group&amp;group=".
+                     "$env{'form.group'}&amp;$refarg",
+               text=>"Send a Message in a Group",
+               title=>"Compose Group Message"},);
     if ($action eq 'sending') {
             &Apache::lonhtmlcommon::add_breadcrumb
                          ({text=>"Messages being sent.",
                            title=>"E-mails sent"},);
     }
     my $groupheader = &Apache::loncommon::start_page('Group Message');
-    $groupheader .= &Apache::lonhtmlcommon::breadcrumbs
-                ('Group - '.$env{'form.group'}.' Email');
+    $groupheader .= &Apache::lonhtmlcommon::breadcrumbs(
+                                    &mt('Group messages - [_1]',$description),
+                                                        undef,undef,undef,undef,1);
     return $groupheader;
 }
 
@@ -811,7 +834,8 @@ sub discrit {
                 .'<input type="hidden" name="confirm" value="true" />';
     my %what=&Apache::lonnet::dump('critical');
     my $result = '';
-    foreach my $key (sort(keys(%what))) {
+    # Sort by date in descending order
+    foreach my $key (sort{$b <=> $a}(keys(%what))) {    
         my %content=&Apache::lonmsg::unpackagemsg($what{$key});
         next if ($content{'senderdomain'} eq '');
         my $description;
@@ -841,7 +865,7 @@ sub discrit {
                       .&Apache::lonhtmlcommon::row_closure(1);
         }
         $result .= &Apache::lonhtmlcommon::row_title(&mt('Message'),undef,'LC_evenrow_value')
-                  .'<pre>'.&Apache::lontexconvert::msgtexconverted($content{'message'}).'</pre>'
+                  .'<pre class="LC_wordwrap">'.&Apache::lontexconvert::msgtexconverted($content{'message'}).'</pre>'
                   .&Apache::lonhtmlcommon::row_closure()
                   .&Apache::lonhtmlcommon::row_title('',undef,'LC_oddrow_value')
                   .'<div class="LC_warning">';
@@ -877,8 +901,9 @@ sub discrit {
             '<p class="LC_info">'.
             &mt('You have no critical messages.').
             '</p>'.
-            '<a href="/adm/roles">'.&mt('Select a course').'</a><br />'.
-            '<a href="/adm/email">'.&mt('Communicate').'</a>';
+            &Apache::lonhtmlcommon::actionbox(
+                ['<a href="/adm/roles">'.&mt('Select a course').'</a>',
+                 '<a href="/adm/email">'.&mt('Communicate').'</a>']);
     } else {
         $r->print($header);
     }
@@ -887,7 +912,7 @@ sub discrit {
 }
 
 sub sortedmessages {
-    my ($blocked,$startblock,$endblock,$numblocked,$folder,$msgstatus) = @_;
+    my ($blocked,$startblock,$endblock,$by_ip,$numblocked,$folder,$msgstatus) = @_;
     my $suffix=&Apache::lonmsg::foldersuffix($folder);
     my @messages = &Apache::lonnet::getkeys('nohist_email'.$suffix);
     #unpack the varibles and repack into temp for sorting
@@ -919,7 +944,8 @@ sub sortedmessages {
 	    push(@temp1,$content{'recuser'},$content{'recdomain'});
 	}
         # Check whether message was sent during blocking period.
-        if ($sendtime >= $startblock && ($sendtime <= $endblock && $endblock > 0) ) {
+        if (($by_ip) ||
+            (($sendtime >= $startblock) && ($sendtime <= $endblock && $endblock > 0))) {
             $$blocked{$msgid} = 'ON';
             $$numblocked ++;
         } else { 
@@ -1020,6 +1046,13 @@ sub disall {
     &Apache::loncommon::store_settings('user','mail',\%saveable);
     &Apache::loncommon::restore_settings('user','mail',\%saveable);
     $folder    ||= $env{'form.folder'};
+    # Always show critical messages if present
+    my @what=&Apache::lonnet::dump('critical',$env{'user.domain'},$env{'user.name'});
+    if ($what[0]) {
+	if (($what[0] ne 'con_lost') && ($what[0]!~/^error\:/)) {
+            $folder = 'critical';
+        }
+    }
     $msgstatus ||= $env{'form.msgstatus'};
     $env{'form.interdis'} ||= 20;
 
@@ -1039,12 +1072,15 @@ sub disfolder {
     my %blocked = ();
     my %setters = ();
     my $numblocked = 0;
-    my ($startblock,$endblock) = &Apache::loncommon::blockcheck(\%setters,'com');
-    my %lt = &Apache::lonlocal::texthash(
+    my $clientip = &Apache::lonnet::get_requestor_ip($r);
+    my ($startblock,$endblock,$triggerblock,$by_ip,$blockdom) = 
+        &Apache::loncommon::blockcheck(\%setters,'com',$clientip);
+    my %js_lt = &Apache::lonlocal::texthash(
                       sede => 'Select a destination folder to which the messages will be moved.',
                       nome => 'No messages have been selected to apply this action to.',
                       chec => 'Check the checkbox for at least one message.',  
     );
+    &js_escape(\%js_lt);
     my $jscript = &Apache::loncommon::check_uncheck_jscript();
     $r->print(<<ENDDISHEADER);
 <script type="text/javascript">
@@ -1055,7 +1091,7 @@ sub disfolder {
         document.disall.markedaction.value = document.disall.checkedaction.options[document.disall.checkedaction.selectedIndex].value;
         if (document.disall.checkedaction.options[document.disall.checkedaction.selectedIndex].value == 'markedmove') {
             if (document.disall.movetofolder.options[document.disall.movetofolder.selectedIndex].value == "") {
-                alert("$lt{'sede'}");
+                alert("$js_lt{'sede'}");
                 return;
             } 
         }
@@ -1072,7 +1108,7 @@ sub disfolder {
             }
         }   
         if (checktotal == 0) {
-            alert("$lt{'nome'}\\n$lt{'chec'}");
+            alert("$js_lt{'nome'}\\n$js_lt{'chec'}");
             return;
         }
         document.disall.submit();
@@ -1082,7 +1118,7 @@ sub disfolder {
 ENDDISHEADER
 
     my $fsqs='&amp;folder='.$folder;
-    my @temp=&sortedmessages(\%blocked,$startblock,$endblock,\$numblocked,$folder,$msgstatus);
+    my @temp=&sortedmessages(\%blocked,$startblock,$endblock,$by_ip,\$numblocked,$folder,$msgstatus);
     my $totalnumber=$#temp+1;
     if ($totalnumber < 1) {
         $r->print('<p class="LC_info">');
@@ -1095,7 +1131,7 @@ ENDDISHEADER
         }
         $r->print('</p>');
         if ($numblocked > 0) {
-            $r->print(&blocked_in_folder($numblocked,$startblock,$endblock,
+            $r->print(&blocked_in_folder($numblocked,$startblock,$endblock,$by_ip,$clientip,$blockdom,
                                          \%setters));
         }
         return;
@@ -1201,7 +1237,7 @@ ENDDISHEADER
             foreach my $item ($localsenttime,$dis_name,$dis_domain,$shortsubj) {
                 $r->print('<td>'.(($status eq 'new')?'<b>':'').
                           '<a href="/adm/email?display='.$origID.$sqs.'">'.
-                          $item.(($status eq 'new')?'</b>':'').'</a></td>');
+                          $item.'</a>'.(($status eq 'new')?'</b>':'').'</td>');
             }
             # Description and Status
             my $showstatus;
@@ -1232,17 +1268,17 @@ ENDDISHEADER
 
 
     # Bottom Functions
-    $r->print('<table border="0" cellspacing="2" cellpadding="8">
+    $r->print('
+<div class="LC_columnSection"><fieldset>
+<legend>'.&mt('Message Actions').'</legend>
+<table border="0" cellspacing="2" cellpadding="8">
  <tr>
-  <td>
-   <fieldset>
-   <legend>'.&mt('Select').'</legend>
+  <td><b>'.&mt('Select Messages').'</b><br />
    <span class="LC_nobreak">
    <input type="button" onclick="javascript:checkAll(document.disall.delmark)" value="'.&mt('Check All').'" />'."\n".
   ' <input type="button" onclick="javascript:uncheckAll(document.disall.delmark)" value="'.&mt('Uncheck All').'" />'."\n".
   '<input type="hidden" name="sortedby" value="'.$env{'form.sortedby'}.'" />
   </span>
-  </fieldset>
   </td>'."\n".
   '<td><b>'.&mt('Action').'</b><br />'."\n".
   '  <select name="checkedaction">'."\n");
@@ -1251,7 +1287,7 @@ ENDDISHEADER
         $r->print('    <option value="markeddel">'.&mt('Delete').'</option>'."\n");
     }
     if ($msgstatus ne 'read') {
-        $r->print('    <option value="markedread">'.&mt('Mark Read').'</option>."\n"');
+        $r->print('    <option value="markedread">'.&mt('Mark Read').'</option>'."\n");
     }
     if ($msgstatus ne 'unread') {
         $r->print('    <option value="markedunread">'.&mt('Mark Unread').'</option>'."\n");
@@ -1266,7 +1302,7 @@ ENDDISHEADER
     $r->print("\n".'</select></td>'."\n");
 
     if (keys(%gotfolders) > 0) {
-        $r->print('<td><b>'.&mt('Destination folder').'<b><br />');
+        $r->print('<td><b>'.&mt('Destination folder').'</b><br />');
 	my %userfolders;
         foreach my $key (keys(%gotfolders)) {
             $userfolders{$key} = $key;
@@ -1275,10 +1311,12 @@ ENDDISHEADER
         $r->print(&Apache::loncommon::select_form('','movetofolder',\%userfolders).
                   '</td>');
     }
-    $r->print('<td>'.
+    $r->print('<td style="vertical-align:bottom;">'.
               '<input type="button" name="go" value="'.&mt('Go').
               '" onclick="javascript:validate_checkedaction()"/></td>'."\n".
-              '</tr></table>');
+              '</tr></table>'."\n".
+              '</fieldset></div>'."\n"
+    );
     my $postedstartdis=$startdis+1;
     $r->print('<input type="hidden" name="folder" value="'.$folder.'" /><input type="hidden" name="startdis" value="'.$postedstartdis.'" /><input type="hidden" name="interdis" value="'.$env{'form.interdis'}.'" /><input type="hidden" name="msgstatus" value="'.$msgstatus.'" /><input type="hidden" name="markedaction" value="" /></form>');
     if ($numblocked > 0) {
@@ -1288,15 +1326,22 @@ ENDDISHEADER
 }
 
 sub blocked_in_folder {
-    my ($numblocked,$startblock,$endblock,$setters) = @_;
-    my $beginblock = &Apache::lonlocal::locallocaltime($startblock);
-    my $finishblock = &Apache::lonlocal::locallocaltime($endblock);
-    my $output = '<br /><br />'.
+    my ($numblocked,$startblock,$endblock,$by_ip,$clientip,$blockdom,$setters) = @_;
+    my $output;
+    if ($by_ip) {
+        $output = '<br /><br />'.
+                  &mt('[quant,_1,message is, messages are] not viewable because display of LON-CAPA messages is blocked for your current IP address: [_2].',$numblocked,$clientip).'<br />'.
+                  &mt('Note: communication is being blocked for certain IP address(es).');
+    } else {
+        my $beginblock = &Apache::lonlocal::locallocaltime($startblock);
+        my $finishblock = &Apache::lonlocal::locallocaltime($endblock);
+        $output = '<br /><br />'.
                   &mt('[quant,_1,message is, messages are] not viewable because display of LON-CAPA messages sent to you by other students between [_2] and [_3] is currently being blocked because of online exams.',$numblocked,$beginblock,$finishblock);
+    }
     #$output .= &Apache::loncommon::build_block_table($startblock,$endblock,
     #                                                 $setters);
     
-    my ($blocked, $blocktext) = &Apache::loncommon::blocking_status("com");
+    my ($blocked, $blocktext) = &Apache::loncommon::blocking_status("com",$clientip);
     $output .="<br /><br />".$blocktext;
 
     return $output;
@@ -1381,11 +1426,14 @@ sub compout {
                                        'to'   => 'To:',
                                       );
     my %attachmax = (
-                     text => &mt('(128 KB max size)'),
-                     num  => 131072,
+                     text => &mt('(1 MB max size)'),
+                     num  => 1048576,
                     );
     if (!$forwarding && !$multiforward) {
-        $attachrow = '<tr><td colspan="3"><b>'.$lt{'atta'}.'</b> '.$attachmax{'text'}.': <input type="file" name="attachment" /></td></tr>';
+        $attachrow = '<tr><td colspan="3"><b>'.$lt{'atta'}.'</b> '.$attachmax{'text'}
+            .': <input type="file" name="attachment" class="LC_flUpload" multiple />'
+            .'<input type="hidden" id="LC_free_space" value="'.$attachmax{'num'}.'" />'
+            .'</td></tr>';
     }
     if (&Apache::lonnet::allowed('srm',$env{'request.course.id'})
 	|| &Apache::lonnet::allowed('srm',$env{'request.course.id'}.
@@ -1462,9 +1510,12 @@ function courseRecipients() {
                     document.compemail.groupmail.value = document.$formname.groupmail[document.$formname.groupmail.selectedIndex].value;
 |;
                 }
+                #typeof(...forminput.length) returns 'undefined' if only one entry exists
                 $broadcast_js .= qq|
     if (typeof(document.$formname.selectedusers_forminput.length)=="undefined") {
-        document.compemail.courserecips.value += '_&&&_'+document.$formname.selectedusers_forminput.value;
+        if (document.$formname.selectedusers_forminput.checked) {
+            document.compemail.courserecips.value += '_&&&_'+document.$formname.selectedusers_forminput.value;
+        }
     } else {
         for (var i=0; i<document.$formname.selectedusers_forminput.length; i++) {
             if (document.$formname.selectedusers_forminput[i].checked) {
@@ -1654,8 +1705,8 @@ ENDREPSCRIPT
         $r->print(&additional_rec_row(\%lt));
         $r->print('<tr><td colspan="2">'.
                   &mt('Unless you choose otherwise:').'<ul><li>'.
-        &mt("The subject in each forwarded message will be <i>'Forwarding:'</i> followed by the original subject.").'</li><li>'.
-        &mt("The message itself will begin with a first line: <i>'Forwarded message from'</i> followed by the original sender's name.").'</li></ul></td></tr>');
+        &mt("The subject in each forwarded message will be [_1]'Forwarding:'[_2] followed by the original subject.",'<i>','</i>').'</li><li>'.
+        &mt("The message itself will begin with a first line: [_1]'Forwarded message from'[_2] followed by the original sender's name.",'<i>','</i>').'</li></ul></td></tr>');
         $func1='Forward'; # do not translate here!
         $dissub = &mt('Forwarding').': ';
         $subj_size = '10';
@@ -1730,7 +1781,7 @@ ENDBLOCK
 '</pre>
 </p>
 <p>
-'.&mt('The messages will be assembled from all lines with the respective'."\n".'<tt>username:domain</tt>, and appended to the general message text.'));
+'.&mt('The messages will be assembled from all lines with the respective [_1][_2]username:domain[_3], and appended to the general message text.','<br />','<tt>','</tt>'));
         $r->print(<<ENDUPLOAD);
 </p>
 <p>
@@ -1884,7 +1935,7 @@ sub disfacetoface {
 			 $env{'course.'.$env{'request.course.id'}.'.domain'},
 			 $env{'course.'.$env{'request.course.id'}.'.num'},
                          '%255b'.$user.'%253a'.$domain.'%255d');
-    my $result='<div>';
+    my $result='';
     foreach my $key (sort(keys(%records))) {
         my %content=&Apache::lonmsg::unpackagemsg($records{$key});
         next if ($content{'senderdomain'} eq '');
@@ -1916,8 +1967,7 @@ sub disfacetoface {
             } else {
                 %content=&Apache::lonmsg::unpackagemsg($content{'message'});
                 $content{'message'} =
-                '<b>'.&mt('Subject').': '.$content{'subject'}.'</b><br
-'.
+                '<b>'.&mt('Subject').': '.$content{'subject'}.'</b><br />'.
                 $content{'message'};
             }
         } else {
@@ -1938,7 +1988,7 @@ sub disfacetoface {
  &Apache::loncommon::plainname($content{'sendername'},$content{'senderdomain'}),$content{'sendername'},$content{'senderdomain'}).'</b> ('.
 $content{'sendername'}.':'.
             $content{'senderdomain'}.') '.$content{'time'}.
-            '<br /><pre>'.
+            '<br /><pre class="LC_wordwrap">'.
               &Apache::lontexconvert::msgtexconverted($content{'message'}).
 	      '</pre>';
      }
@@ -1946,15 +1996,15 @@ $content{'sendername'}.':'.
     if ($result eq '') {
         my $lctype = &mt(lc(&Apache::loncommon::course_type()));
 	if ($target ne 'tex') { 
-	    $r->print("<p><b>".&mt('No notes, face-to-face discussion records, critical messages, or broadcast messages in this [_1].',$lctype)."</b></p>");
+	    $r->print("<p><b>".&mt('No notes, face-to-face discussion records, critical messages or broadcast messages in this '.$lctype.'.')."</b></p>");
 	} else {
-	    $r->print('\textbf{'.&mt('No notes, face-to-face discussion records, critical messages or broadcast messages in this [_1].',$lctype).'}\\\\');
+	    $r->print('\textbf{'.&mt('No notes, face-to-face discussion records, critical messages or broadcast messages in this '.$lctype.'.').'}\\\\');
 	}
-    } elsif ($target ne 'tex') {
-       $r->print($result.'</div>');
+    } elsif ($target eq 'tex') {
+        $r->print(&Apache::lonxml::xmlparse($r,$target,$result));
     } else {
-		$r->print(&Apache::lonxml::xmlparse($r, 'tex', $result));
-	}
+        $r->print('<div>'.$result.'</div>');
+    }
 }
 
 sub general_message {
@@ -2038,7 +2088,7 @@ sub facetoface {
                  .&mt('Discussion and message records for [_1] ([_2])'
                      ,$aboutmelink
                      ,$env{'form.recuname'}.':'.$env{'form.recdomain'})
-                 .'<h2>'
+                 .'</h2>'
        );
         &disfacetoface($r,$env{'form.recuname'},$env{'form.recdomain'});
 	$r->print(<<ENDRHEAD);
@@ -2057,317 +2107,6 @@ ENDBFORM
     }
 }
 
-# ----------------------------------------------------------- Blocking during exams
-
-sub examblock {
-    my ($r,$action) = @_;
-    unless ($env{'request.course.id'}) { return;}
-    if (!&Apache::lonnet::allowed('dcm',$env{'request.course.id'})
-	&& ! &Apache::lonnet::allowed('dcm',$env{'request.course.id'}.
-				      '/'.$env{'request.course.sec'})) {
-	$r->print('Not allowed');
-	return;
-    }
-    my $usertype;
-    my $crstype = &Apache::loncommon::course_type();
-    if ($crstype eq 'Community') {
-        $usertype = 'members';
-    } else {
-	$usertype = 'students';
-    }
-    my $lctype = lc($crstype);
-    my %lt=&Apache::lonlocal::texthash(
-            'comb' => 'Communication Blocking',
-            'cbds' => 'Communication blocking during scheduled exams',
-            'desc' => "You can use communication blocking to prevent $usertype enrolled in this $lctype from displaying LON-CAPA messages sent by other $usertype during an online exam. As blocking of communication could potentially interrupt legitimate communication between $usertype who are also both enrolled in a different LON-CAPA course or community, please be careful that you select the correct start and end times for your scheduled exam when setting or modifying these parameters.",
-             'mecb' => 'Modify existing communication blocking periods',
-             'ncbc' => 'No communication blocks currently saved',
-             'stor' => 'Save',
-    );
-
-    my %ltext = &Apache::lonlocal::texthash(
-            'dura' => 'Duration',
-            'setb' => 'Set by',
-            'even' => 'Event',
-            'blck' => 'Blocked?',
-            'actn' => 'Action',
-            'star' => 'Start',
-            'endd' => 'End'
-    );
-
-    &printheader($r,'/adm/email?block=display',$lt{'comb'});
-    $r->print('<h3>'.$lt{'cbds'}.'</h3>');
-
-    if ($action eq 'store') {
-        &blockstore($r);
-    }
-
-    $r->print($lt{'desc'}.'<br /><br />
-               <form name="blockform" method="post" action="/adm/email?block=store">
-             ');
-
-    $r->print('<h4>'.$lt{'mecb'}.'</h4>');
-    my %records = ();
-    my $blockcount = 0;
-    my $parmcount = 0;
-    &get_blockdates(\%records,\$blockcount);
-    if ($blockcount > 0) {
-        $parmcount = &display_blocker_status($r,\%records,\%ltext);
-    } else {
-        $r->print($lt{'ncbc'}.'<br /><br />');
-    }
-    &display_addblocker_table($r,$parmcount,\%ltext);
-    my $end_page=&Apache::loncommon::end_page();
-    $r->print(<<"END");
-<br />
-<input type="hidden" name="blocktotal" value="$blockcount" />
-<input type ="submit" value="$lt{'stor'}" />
-</form>
-$end_page
-END
-    return;
-}
-
-sub blockstore {
-    my $r = shift;
-    my %lt=&Apache::lonlocal::texthash(
-            'tfcm' => 'The following changes were made',
-            'ncwm' => 'No changes were made.' 
-    );
-    my %adds = ();
-    my %removals = ();
-    my %cancels = ();
-    my $modtotal = 0;
-    my $canceltotal = 0;
-    my $addtotal = 0;
-    my %blocking = ();
-    $r->print('<h3>'.$lt{'head'}.'</h3>');
-    foreach my $envkey (keys(%env)) {
-        if ($envkey =~ m/^form\.modify_(\d+)$/) {
-            $adds{$1} = $1;
-            $removals{$1} = $1;
-            $modtotal ++;
-        } elsif ($envkey =~ m/^form\.cancel_(\d+)$/) {
-            $cancels{$1} = $1;
-            unless ( defined($removals{$1}) ) {
-                $removals{$1} = $1;
-                $canceltotal ++;
-            }
-        } elsif ($envkey =~ m/^form\.add_(\d+)$/) {
-            $adds{$1} = $1;
-            $addtotal ++;
-        } 
-    }
-
-    foreach my $key (keys(%removals)) {
-        my $hashkey = $env{'form.key_'.$key};
-        &Apache::lonnet::del('comm_block',["$hashkey"],
-                         $env{'course.'.$env{'request.course.id'}.'.domain'},
-                         $env{'course.'.$env{'request.course.id'}.'.num'}
-                         );
-    }
-    foreach my $key (keys(%adds)) {
-        unless ( defined($cancels{$key}) ) {
-            my ($newstart,$newend) = &get_dates_from_form($key);
-            my $newkey = $newstart.'____'.$newend;
-            my $blocktypes = &get_block_choices($key);
-            $blocking{$newkey} = {
-                          setter => $env{'user.name'}.':'.$env{'user.domain'},
-                          event  => &escape($env{'form.title_'.$key}),
-                          blocks => $blocktypes,
-                        };
-        }
-    }
-    if ($addtotal + $modtotal > 0) {
-        &Apache::lonnet::put('comm_block',\%blocking,
-                     $env{'course.'.$env{'request.course.id'}.'.domain'},
-                     $env{'course.'.$env{'request.course.id'}.'.num'}
-                     );
-    }
-    my $chgestotal = $canceltotal + $modtotal + $addtotal;
-    if ($chgestotal > 0) {
-        $r->print($lt{'tfcm'}.'<ul>');
-        if ($canceltotal > 0) {
-            $r->print('<li>'.&mt('[quant,_1,communication blocking period was,communication blocking periods were] removed.',$canceltotal).'</li>');
-        }
-        if ($modtotal > 0) {
-            $r->print('<li>'.&mt('[quant,_1,communication blocking period was,communication blocking periods were] modified.',$modtotal).'</li>');
-        }
-        if ($addtotal > 0) {
-            $r->print('<li>'.&mt('[quant,_1,communication blocking period was,communication blocking periods were] added.',$addtotal).'</li>');
-        }
-        $r->print('</ul>');
-    } else {
-        $r->print($lt{'ncwm'});
-    }
-    $r->print('<br />');
-    return;
-}
-
-sub get_dates_from_form {
-    my $item = shift;
-    my $startdate = &Apache::lonhtmlcommon::get_date_from_form('startdate_'.$item);
-    my $enddate   = &Apache::lonhtmlcommon::get_date_from_form('enddate_'.$item);
-    return ($startdate,$enddate);
-}
-
-sub get_blockdates {
-    my ($records,$blockcount) = @_;
-    $$blockcount = 0;
-    %{$records} = &Apache::lonnet::dump('comm_block',
-                         $env{'course.'.$env{'request.course.id'}.'.domain'},
-                         $env{'course.'.$env{'request.course.id'}.'.num'}
-                         );
-    $$blockcount = keys(%{$records});
-
-    if ((keys(%{$records}))[0] =~ /^error: 2 /) {
-	$records = {};
-	$$blockcount = 0;
-    }
-}
-
-sub get_block_choices {
-    my $item = shift;
-    my $blocklist;
-    my ($typeorder,$types) = &blocktype_text();
-    foreach my $type (@{$typeorder}) {
-        if ($env{'form.'.$type.'_'.$item}) {
-            $blocklist->{$type} = 'on'; 
-        } else {
-            $blocklist->{$type} = 'off';
-        }
-    }
-    return $blocklist;
-}
-
-sub display_blocker_status {
-    my ($r,$records,$ltext) = @_;
-    my $parmcount = 0;
-  
-    my %lt = &Apache::lonlocal::texthash(
-        'modi' => 'Modify',
-        'canc' => 'Cancel',
-    );
-    my ($typeorder,$types) = &blocktype_text();
-    $r->print(&Apache::loncommon::start_data_table());
-    $r->print(<<"END");
-  <tr>
-    <th>$ltext->{'dura'}</th>
-    <th>$ltext->{'setb'}</th>
-    <th>$ltext->{'even'}</th>
-    <th>$ltext->{'blck'}</th>
-    <th>$ltext->{'actn'}</th>
-  </tr>
-END
-    foreach my $record (sort(keys(%{$records}))) {
-        my $onchange = 'onFocus="javascript:window.document.forms['.
-                       "'blockform'].elements['modify_".$parmcount."'].".
-                       'checked=true;"';
-        my ($start,$end) = split(/____/,$record);
-        my $startform = &Apache::lonhtmlcommon::date_setter('blockform','startdate_'.$parmcount,$start,$onchange);
-        my $endform = &Apache::lonhtmlcommon::date_setter('blockform','enddate_'.$parmcount,$end,$onchange);
-	
-	my ($setuname,$setudom,$title,$blocks) = 
-	    &Apache::loncommon::parse_block_record($$records{$record});
-	$title = &HTML::Entities::encode($title,'"<>&');
-        my $settername = 
-           &Apache::loncommon::aboutmewrapper(
-                           &Apache::loncommon::plainname($setuname,$setudom),
-                           $setuname,$setudom);
-        $r->print(&Apache::loncommon::start_data_table_row());
-        $r->print(<<"END");
-        <td>$ltext->{'star'}:&nbsp;$startform<br />$ltext->{'endd'}:&nbsp;&nbsp;$endform</td>
-        <td>$settername</td>
-        <td><input type="text" name="title_$parmcount" size="15" value="$title" /><input type="hidden" name="key_$parmcount" value="$record" /></td>
-        <td>
-END
-        foreach my $block (@{$typeorder}) {
-            my $blockstatus = '';
-            if ($blocks->{$block} eq 'on') {
-                $blockstatus = 'checked="checked"';
-            }
-            $r->print('<span class="LC_nobreak"><label><input type="checkbox" name="'.$block.'_'.$parmcount.'" '.$blockstatus.' value="1" />'.$types->{$block}.'</label></span><br />');
-        }
-        $r->print(<<"END");
-        </td>      
-        <td><span class="LC_nobreak"><label>
-        <input type="checkbox" name="modify_$parmcount" />$lt{'modi'}
-        </label></span><br /><span class="LC_nobreak">
-        <label>
-        <input type="checkbox" name="cancel_$parmcount" />$lt{'canc'}
-        </label></span>
-END
-        $r->print(&Apache::loncommon::end_data_table_row());
-        $parmcount++;
-    }
-    $r->print(<<"END");
-</table>
-<br />
-<br />
-END
-    return $parmcount;
-}
-
-sub display_addblocker_table {
-    my ($r,$parmcount,$ltext) = @_;
-    my $start = time;
-    my $end = $start + (60 * 60 * 2); #Default is an exam of 2 hours duration.
-    my $onchange = 'onFocus="javascript:window.document.forms['.
-                   "'blockform'].elements['add_".$parmcount."'].".
-                   'checked=true;"';
-    my $startform = &Apache::lonhtmlcommon::date_setter('blockform','startdate_'.$parmcount,$start,$onchange);
-    my $endform = &Apache::lonhtmlcommon::date_setter('blockform','enddate_'.$parmcount,$end,$onchange);
-    my %lt = &Apache::lonlocal::texthash(
-        'addb' => 'Add block',
-        'exam' => 'e.g., Exam 1',
-        'addn' => 'Add new communication blocking periods'
-    );
-    my ($typeorder,$types) = &blocktype_text();
-    $r->print(<<"END");
-<h4>$lt{'addn'}</h4> 
-END
-    $r->print(&Apache::loncommon::start_data_table());
-    $r->print(<<"END");
-   <tr>
-     <th>$ltext->{'dura'}</th>
-     <th>$ltext->{'even'} $lt{'exam'}</th>
-     <th>$ltext->{'blck'}</th>
-     <th>$ltext->{'actn'}</th>
-   </tr>
-END
-    $r->print(&Apache::loncommon::start_data_table_row());
-    $r->print(<<"END");
-     <td>$ltext->{'star'}:&nbsp;$startform<br />$ltext->{'endd'}:&nbsp;&nbsp;$endform</td>
-     <td><input type="text" name="title_$parmcount" size="15" value="" /></td>
-     <td>
-END
-    foreach my $block (@{$typeorder}) {
-        $r->print('<span class="LC_nobreak"><label><input type="checkbox" name="'.$block.'_'.$parmcount.'" value="1" />'.$types->{$block}.'</label></span><br />');
-     }
-     $r->print(<<"END");
-     </td>
-     <td><span class="LC_nobreak"><label>
-     <input type="checkbox" name="add_$parmcount" value="1" />$lt{'addb'}
-     </label></span></td>
-END
-    $r->print(&Apache::loncommon::end_data_table_row());
-    $r->print(&Apache::loncommon::end_data_table());
-    return;
-}
-
-sub blocktype_text {
-    my %types = &Apache::lonlocal::texthash(
-        'com' => 'Messaging',
-        'chat' => 'Chat Room',
-        'boards' => 'Discussion',
-        'port' => 'Portfolio',
-        'groups' => 'Groups',
-        'blogs' => 'Blogs',
-    );
-    my $typeorder = ['com','chat','boards','port','groups','blogs'];
-    return ($typeorder,\%types);
-}
-
 # ----------------------------------------------------------- Display a message
 
 sub displaymessage {
@@ -2377,15 +2116,16 @@ sub displaymessage {
     my %setters = ();
     my $numblocked = 0;
     my $crstype = &Apache::loncommon::course_type();
+    my $clientip = &Apache::lonnet::get_requestor_ip($r);
 
 # info to generate "next" and "previous" buttons and check if message is blocked
-    my ($startblock,$endblock) = &Apache::loncommon::blockcheck(\%setters,'com');
-    my @messages=&sortedmessages(\%blocked,$startblock,$endblock,\$numblocked,$folder,$msgstatus);
+    my ($startblock,$endblock,$triggerblock,$by_ip,$blockdom) = 
+        &Apache::loncommon::blockcheck(\%setters,'com',$clientip);
+    my @messages=&sortedmessages(\%blocked,$startblock,$endblock,$by_ip,\$numblocked,$folder,$msgstatus);
     if ( $blocked{$msgid} eq 'ON' ) {
         &printheader($r,'/adm/email',&mt('Display a Message'));
         #$r->print(&mt('You attempted to display a message that is currently blocked because you are enrolled in one or more courses for which there is an ongoing online exam.'));
-        #&build_block_table($r,$startblock,$endblock,\%setters);
-        my($blocked, $blocktext) = &Apache::loncommon::blocking_status("com");
+        my($blocked, $blocktext) = &Apache::loncommon::blocking_status("com",$clientip);
         $r->print("<br />".$blocktext);
         return;
     }
@@ -2419,8 +2159,28 @@ sub displaymessage {
 
 
     my $number_of_messages = scalar(@messages); #subtract 1 for last index
+    my $head_extra;
+
+# if student's view of resource will be included
+# get <link> tag(s) for css file(s) in use, and pass to &header to include
+# in call to loncommon::start_page()
+
+    if (($env{'request.course.id'} eq $content{'courseid'}) &&
+        (&Apache::lonnet::allowed('vgr',$content{'courseid'}))) {
+        my $symb;
+        if (defined($content{'symb'})) {
+            $symb = $content{'symb'};
+        } elsif (defined($content{'baseurl'})) {
+            $symb=&Apache::lonnet::symbread($content{'baseurl'});
+        }
+        if ($symb) {
+            $head_extra = &Apache::loncommon::css_links($symb);
+        }
+    }
+
 # start output
-    &printheader($r,'/adm/email?display='.&escape($msgid),'Display a Message','',$content{'baseurl'});
+    &printheader($r,'/adm/email?display='.&escape($msgid),'Display a Message','',
+                 $content{'baseurl'},$head_extra);
 
 # Prepare available functions
     my @functionlist;
@@ -2438,19 +2198,22 @@ sub displaymessage {
     push(@functionlist,'<a href="/adm/email?markdel='.&escape($msgid).$sqs.'">'
                   .&mt('Delete')
                   .'</a>');
-    push(@functionlist,'<a href="/adm/email?'.$sqs.'">'
-                  .&mt('Back to Folder Display')
-                  .'</a>');
+
+# Prepare available navigation
+    my @navigationlist;
     if ($counter > 0){
-        push(@functionlist,'<a href="/adm/email?display='.$messages[$counter-1]->[5].$sqs.'">'
+        push(@navigationlist,'<a href="/adm/email?display='.$messages[$counter-1]->[5].$sqs.'">'
                           .&mt('Previous')
                           .'</a>');
     }
     if ($counter < $number_of_messages - 1){
-        push(@functionlist,'<a href="/adm/email?display='.$messages[$counter+1]->[5].$sqs.'">'
+        push(@navigationlist,'<a href="/adm/email?display='.$messages[$counter+1]->[5].$sqs.'">'
                           .&mt('Next')
                           .'</a>');
     }
+    push(@navigationlist,'<a href="/adm/email?'.$sqs.'">'
+                  .&mt('Back to Folder Display')
+                  .'</a>');
 
 # Prepare available actions
     my $symb;
@@ -2459,12 +2222,13 @@ sub displaymessage {
     } elsif (defined($content{'baseurl'})) {
         $symb=&Apache::lonnet::symbread($content{'baseurl'});
     }
-        my @actionlist;
+    my @actionlist;
     if ($env{'user.adv'}) {
 
-	if (&Apache::lonnet::allowed('vgr',$env{'request.course.id'})) {
+	if (($env{'request.course.id'}) && ($from_student) &&
+            (&Apache::lonnet::allowed('vgr',$env{'request.course.id'}))) {
 		push(@actionlist,&Apache::loncommon::track_student_link(
-                                      &mt('View recent activity')
+                                      'View recent activity'
                                      ,$content{'sendername'}
                                      ,$content{'senderdomain'}
                                      ,'check'));
@@ -2487,7 +2251,7 @@ sub displaymessage {
 	}
     }
 
-# Print functionlist and actionlist in page header
+# Print functionlist, navigationlist, and actionlist in page header
         my $functions='<div class="LC_columnSection">';
 
         # Functionlist
@@ -2497,10 +2261,18 @@ sub displaymessage {
         }
         $functions .= &Apache::lonhtmlcommon::end_funclist();
 
+        # Navigationlist
+        $functions.=&Apache::lonhtmlcommon::start_funclist(
+                    &mt('Navigation'));
+        foreach my $item (@navigationlist) {
+            $functions.=&Apache::lonhtmlcommon::add_item_funclist($item);
+        }
+        $functions .= &Apache::lonhtmlcommon::end_funclist();
+
         # Actionlist
         if (@actionlist) {
-            my $legendtext=&mt('Currently available actions (will open extra window)');
-            $functions.=&Apache::lonhtmlcommon::start_funclist($legendtext);
+            $functions.=&Apache::lonhtmlcommon::start_funclist(
+                            &mt('Currently available actions (will open extra window)'));
             foreach my $item (@actionlist) {
                 $functions.=&Apache::lonhtmlcommon::add_item_funclist($item);
             }
@@ -2757,7 +2529,7 @@ sub displaymessage {
 
     # Message
     $r->print(&Apache::lonhtmlcommon::row_title(&mt('Message'))
-             .'<pre>'
+             .'<pre class="LC_wordwrap">'
 	     .&Apache::lontexconvert::msgtexconverted($content{'message'},1)
 	     .'</pre>'
     );
@@ -2917,6 +2689,13 @@ sub displayresource {
         }
 # Could not get a symb, give up
 	unless ($symb) { return $content{'citation'}; }
+        if ($symb =~ /ext\.tool$/) {
+            return '<h2>'.&mt('Current transactions for student (if applicable)').'</h2>'.
+            &Apache::loncommon::get_previous_attempt($symb,
+                                                     $content{'sendername'},
+                                                     $content{'senderdomain'},
+                                                     $content{'courseid'});
+        }
 # Have a symb, can render
 	return '<h2>'.&mt('Current attempts of student (if applicable)').'</h2>'.
 	    &Apache::loncommon::get_previous_attempt($symb,
@@ -2942,11 +2721,16 @@ sub displayresource {
 # ================================================================== The Header
 
 sub header {
-    my ($r,$title,$baseurl)=@_;
+    my ($r,$title,$baseurl,$head_extra)=@_;
     my $extra = &Apache::loncommon::studentbrowser_javascript();
     if ($baseurl) {
 	$extra .= "<base href=\"".&Apache::lonnet::absolute_url()."/$baseurl\" />";
     }
+    $extra .= '<script type="text/javascript"
+                src="/res/adm/includes/file_upload.js"></script>';
+    if ($head_extra) {
+        $extra .= "\n$head_extra";
+    }
     $r->print(&Apache::loncommon::start_page('Messages',
  					$extra));
     $r->print(&Apache::lonhtmlcommon::breadcrumbs
@@ -2956,11 +2740,11 @@ sub header {
 # ---------------------------------------------------------------- Print header
 
 sub printheader {
-    my ($r,$url,$desc,$title,$baseurl)=@_;
+    my ($r,$url,$desc,$title,$baseurl,$head_extra)=@_;
     &Apache::lonhtmlcommon::add_breadcrumb
 	({href=>$url,
 	  text=>$desc});
-    &header($r,$title,$baseurl);
+    &header($r,$title,$baseurl,$head_extra);
 }
 
 # ------------------------------------------------------------ Store the comment
@@ -2984,7 +2768,7 @@ sub storedcommentlisting {
        '^'.&escape(&escape($env{'form.showcommentbaseurl'})));
     $r->print(&Apache::loncommon::start_page('Saved Comment Listing',undef,
 					     {'onlybody' => 1}));
-    if ((keys %msgs)[0]=~/^error\:/) {
+    if ((keys(%msgs))[0]=~/^error\:/) {
 	$r->print(&mt('No saved comments yet.'));
     } else {
 	my $found=0;
@@ -3018,7 +2802,7 @@ sub sendoffmail {
         $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
     }
     if ($env{'form.send'}) {
-        if (!$env{'form.multiforward'}) { 
+        if (!$env{'form.multiforward'}) {
             if ($group eq '') {
 	        &printheader($r,'','Messages being sent.');
             } else {
@@ -3048,6 +2832,8 @@ sub sendoffmail {
 
 	my $mode = $env{'form.sendmode'};
 	my (%toaddr,$tos,$cc,$bcc,$broadcast);
+        my (%willtrust,%trustchecked,%disallowed);
+        my $serverdefdom = &Apache::lonnet::default_login_domain();
 
 	if ($mode eq 'group') {
             if (defined($env{'form.courserecips'})) {
@@ -3057,9 +2843,17 @@ sub sendoffmail {
                 foreach my $dest (@to) {
                     my ($user,$domain) = split(/:/, $dest);
                     if (($user ne '') && ($domain ne '')) {
-                        my $rec = $user.":".$domain;
-                        $toaddr{$rec} = '';
-                        $broadcast->{$rec} = '';
+                        unless ($trustchecked{$domain}) {
+                            $willtrust{$domain} = &Apache::lonnet::will_trust('msg',$serverdefdom,$domain);
+                            $trustchecked{$domain} = 1;
+                        }
+                        if ($willtrust{$domain}) {
+                            my $rec = $user.":".$domain;
+                            $toaddr{$rec} = '';
+                            $broadcast->{$rec} = '';
+                        } else {
+                            $disallowed{'to'}{$user.":".$domain} = 1; 
+                        }
                     }
                 }
             }
@@ -3070,22 +2864,47 @@ sub sendoffmail {
 		if ($txt) {
                     $rec =~ s/^\s+//;
                     $rec =~ s/\s+$//;
-		    $toaddr{$rec}.=$txt."\n";
-                    $broadcast->{$rec} = '';
+                    my ($recuname,$recudom) = split(/:/,$rec);
+                    unless ($trustchecked{$recudom}) {
+                        $willtrust{$recudom} = &Apache::lonnet::will_trust('msg',$serverdefdom,$recudom);
+                        $trustchecked{$recudom} = 1;
+                    }
+                    if ($willtrust{$recudom}) {
+		        $toaddr{$rec}.=$txt."\n";
+                        $broadcast->{$rec} = '';
+                    } else {
+                        $disallowed{'to'}{$rec} = 1;
+                    }
 		}
 	    }
 	} else {
 	    if (($env{'form.recuname'} ne '') && ($env{'form.recdomain'} ne '')) {
-		$toaddr{$env{'form.recuname'}.':'.$env{'form.recdomain'}}='';
-                $tos->{$env{'form.recuname'}.':'.$env{'form.recdomain'}}='';
+                unless ($trustchecked{$env{'form.recdomain'}}) {
+                    $willtrust{$env{'form.recdomain'}} = &Apache::lonnet::will_trust('msg',$serverdefdom,$env{'form.recdomain'});
+                    $trustchecked{$env{'form.recdomain'}} = 1;
+                }
+                if ($willtrust{$env{'form.recdomain'}}) {
+		    $toaddr{$env{'form.recuname'}.':'.$env{'form.recdomain'}}='';
+                    $tos->{$env{'form.recuname'}.':'.$env{'form.recdomain'}}='';
+                } else {
+                    $disallowed{'to'}{$env{'form.recuname'}.':'.$env{'form.recdomain'}}; 
+                }
 	    }
 	}
         if ($env{'form.additionalrec_to'}) {
             foreach my $rec (split(/\s*,\s*/,$env{'form.additionalrec_to'})) {
                 my ($auname,$audom)=split(/:/,$rec);
                 if (($auname ne "") && ($audom ne "")) {
-                    $toaddr{$auname.':'.$audom}='';
-                    $tos->{$auname.':'.$audom}='';
+                    unless ($trustchecked{$audom}) {
+                        $willtrust{$audom} = &Apache::lonnet::will_trust('msg',$serverdefdom,$audom);
+                        $trustchecked{$audom} = 1;
+                    }
+                    if ($willtrust{$audom}) {
+                        $toaddr{$auname.':'.$audom}='';
+                        $tos->{$auname.':'.$audom}='';
+                    } else {
+                        $disallowed{'to'}{$auname.':'.$audom};
+                    }
                 }
             }
         }
@@ -3095,8 +2914,16 @@ sub sendoffmail {
             foreach my $rec (@toreplies) {
                 my ($auname,$audom)=split(/:/,$rec);
                 if (($auname ne "") && ($audom ne "")) {
-                    $toaddr{$auname.':'.$audom}='';
-                    $tos->{$auname.':'.$audom}='';
+                    unless ($trustchecked{$audom}) {
+                        $willtrust{$audom} = &Apache::lonnet::will_trust('msg',$serverdefdom,$audom);
+                        $trustchecked{$audom} = 1;
+                    }
+                    if ($willtrust{$audom}) {
+                        $toaddr{$auname.':'.$audom}='';
+                        $tos->{$auname.':'.$audom}='';
+                    } else {
+                        $disallowed{'to'}{$auname.':'.$audom};
+                    } 
                 }
             }
         }
@@ -3104,9 +2931,17 @@ sub sendoffmail {
 	    foreach my $rec (split(/\s*,\s*/,$env{'form.additionalrec_cc'})) {
 		my ($auname,$audom)=split(/:/,$rec);
 		if (($auname ne "") && ($audom ne "")) {
-                    $toaddr{$auname.':'.$audom}='';
                     if (!defined($tos->{$auname.':'.$audom})) {
-		        $cc->{$auname.':'.$audom}='';
+                        unless ($trustchecked{$audom}) {
+                            $willtrust{$audom} = &Apache::lonnet::will_trust('msg',$serverdefdom,$audom);
+                            $trustchecked{$audom} = 1;
+                        }
+                        if ($willtrust{$audom}) {
+                            $toaddr{$auname.':'.$audom}='';
+		            $cc->{$auname.':'.$audom}='';
+                        } else {
+                            $disallowed{'cc'}{$auname.':'.$audom};
+                        }
                     }
 		}
 	    }
@@ -3117,9 +2952,17 @@ sub sendoffmail {
             foreach my $rec (@ccreplies) {
                 my ($auname,$audom)=split(/:/,$rec);
                 if (($auname ne "") && ($audom ne "")) {
-                    $toaddr{$auname.':'.$audom}='';
                     if (!defined($tos->{$auname.':'.$audom})) {
-                        $cc->{$auname.':'.$audom}='';
+                        unless ($trustchecked{$audom}) {
+                            $willtrust{$audom} = &Apache::lonnet::will_trust('msg',$serverdefdom,$audom);
+                            $trustchecked{$audom} = 1;
+                        }
+                        if ($willtrust{$audom}) {
+                            $toaddr{$auname.':'.$audom}='';
+                            $cc->{$auname.':'.$audom}='';
+                        } else {
+                            $disallowed{'cc'}{$auname.':'.$audom} = 1;
+                        }
                     }
                 }
             }
@@ -3130,9 +2973,17 @@ sub sendoffmail {
             foreach my $rec (@groupreplies) {
                 my ($auname,$audom)=split(/:/,$rec);
                 if (($auname ne "") && ($audom ne "")) {
-                    $toaddr{$auname.':'.$audom}='';
                     if (!defined($tos->{$auname.':'.$audom})) {
-                        $broadcast->{$auname.':'.$audom}='';
+                        unless ($trustchecked{$audom}) {
+                            $willtrust{$audom} = &Apache::lonnet::will_trust('msg',$serverdefdom,$audom);
+                            $trustchecked{$audom} = 1;
+                        }
+                        if ($willtrust{$audom}) {
+                            $toaddr{$auname.':'.$audom}='';
+                            $broadcast->{$auname.':'.$audom}='';
+                        } else {
+                            $disallowed{'to'}{$auname.':'.$audom} = 1;
+                        }
                     }
                 }
             }
@@ -3141,10 +2992,18 @@ sub sendoffmail {
             foreach my $rec (split(/\s*,\s*/,$env{'form.additionalrec_bcc'})) {
                 my ($auname,$audom)=split(/:/,$rec);
                 if (($auname ne "") && ($audom ne "")) {
-                    $toaddr{$auname.':'.$audom}='';
-                    if ((!defined($tos->{$auname.':'.$audom})) && 
+                    if ((!defined($tos->{$auname.':'.$audom})) &&
                         (!defined($cc->{$auname.':'.$audom}))) {
-                        $bcc->{$auname.':'.$audom}='';
+                        unless ($trustchecked{$audom}) {
+                            $willtrust{$audom} = &Apache::lonnet::will_trust('msg',$serverdefdom,$audom);
+                            $trustchecked{$audom} = 1;
+                        }
+                        if ($willtrust{$audom}) {
+                            $toaddr{$auname.':'.$audom}='';
+                            $bcc->{$auname.':'.$audom}='';
+                        } else {
+                            $disallowed{'bcc'}{$auname.':'.$audom} = 1;
+                        }
                     }
                 }
             }
@@ -3164,41 +3023,42 @@ sub sendoffmail {
         } else {
             $savemsg=&Apache::lonfeedback::clear_out_html($env{'form.message'});
         }
-        my %reciphash = (
-                           to => $tos,
-                           cc => $cc,
-                           bcc => $bcc,
-                        );
-        if ($mode eq 'group') {
-            if ($group eq '') {
-                $reciphash{'course_broadcast'} = $broadcast;
-            } else {
-                if ($env{'form.groupmail'} eq 'cc') {
-                    $reciphash{'group_cc_broadcast'} = $broadcast;
+        my ($recipid, @recusers, @recudoms, %permresults);
+        if (keys(%toaddr) > 0) {
+            my %reciphash = (
+                               to => $tos,
+                               cc => $cc,
+                               bcc => $bcc,
+                            );
+            if ($mode eq 'group') {
+                if ($group eq '') {
+                    $reciphash{'course_broadcast'} = $broadcast;
                 } else {
-                    $reciphash{'group_bcc_broadcast'} = $broadcast;
+                    if ($env{'form.groupmail'} eq 'cc') {
+                        $reciphash{'group_cc_broadcast'} = $broadcast;
+                    } else {
+                        $reciphash{'group_bcc_broadcast'} = $broadcast;
+                    }
                 }
             }
-        }
-        my ($recipid,$recipstatus) = 
-            &Apache::lonmsg::store_recipients($msgsubj,$env{'user.name'},
-                                       $env{'user.domain'},\%reciphash);
-        if ($recipstatus ne 'ok') {
-            &Apache::lonnet::logthis('Failed to store To, Bcc and Cc recipients for '.$env{'user.name'}.':'.$env{'user.domain'});
-        }
-        if ($env{'form.attachment'}) {
-            if (length($env{'form.attachment'})<131072) {
-                $attachmenturl=&Apache::lonnet::userfileupload('attachment',undef,'feedback/'.$now);
-            } else {
-                $r->print('<p><span class="LC_warning">'.&mt('Attachment not included - exceeded permitted length').'</span><br /></p>');
-            }
-        } elsif ($env{'form.multiforward'}) {
-            if ($env{'form.attachmenturl'} ne '') {
-                $attachmenturl = $env{'form.attachmenturl'};
+            ($recipid,my $recipstatus) = 
+                &Apache::lonmsg::store_recipients($msgsubj,$env{'user.name'},
+                                                  $env{'user.domain'},\%reciphash);
+            if ($recipstatus ne 'ok') {
+                &Apache::lonnet::logthis('Failed to store To, Bcc and Cc recipients for '.$env{'user.name'}.':'.$env{'user.domain'});
+            }
+            if ($env{'form.attachment'}) {
+                if (length($env{'form.attachment'}) <= 1048576) {
+                    $attachmenturl=&Apache::lonnet::userfileupload('attachment',undef,'feedback/'.$now);
+                } else {
+                    $r->print('<p><span class="LC_warning">'.&mt('Attachment not included - exceeded permitted length').'</span><br /></p>');
+                }
+            } elsif ($env{'form.multiforward'}) {
+                if ($env{'form.attachmenturl'} ne '') {
+                    $attachmenturl = $env{'form.attachmenturl'};
+                }
             }
         }
-        my @recusers;
-        my @recudoms;
 	foreach my $address (sort(keys(%toaddr))) {
 	    my ($recuname,$recdomain)=split(/\:/,$address);
             my $msgtxt = $savemsg;
@@ -3215,7 +3075,8 @@ sub sendoffmail {
 						   $env{'form.sendbck'},
 						   $env{'form.permanent'},
 						   \$sentmessage{$address},
-                                                   $nosentstore,$recipid);
+                                                   $nosentstore,$recipid,
+                                                   $attachmenturl,\%permresults);
 	    } else {
 		$r->print(&mt('Sending').' '.$recuname.':'.$recdomain.': ');
 		@thismsg=
@@ -3226,13 +3087,20 @@ sub sendoffmail {
 						     $env{'form.permanent'},
 						     \$sentmessage{$address},
                                                      undef,undef,undef,
-                                                     $nosentstore,$recipid);
+                                                     $nosentstore,$recipid,
+                                                     \%permresults);
             }
 	    $msg_status{$recuname.':'.$recdomain}=join(' ',@thismsg);
 	    if ($msg_status{$recuname.':'.$recdomain} =~ /(ok|con_delayed)/) {  
 	        $numsent++;
                 push(@recusers,$recuname);
                 push(@recudoms,$recdomain);
+                if ($1 eq 'ok') {
+                    $r->print('ok ');
+                }
+                if ($permresults{$recuname.':'.$recdomain}) {
+                    $r->print(' (email) ');
+                }
 	    }
 	    $sendstatus.=' '.join(' ',@thismsg);
 	}
@@ -3328,6 +3196,23 @@ sub sendoffmail {
                 $r->print($message);
             }
         }
+        if (keys(%disallowed)) {
+            if ((ref($disallowed{'to'}) eq 'HASH') && (keys(%{$disallowed{'to'}}) > 0)) {
+                $r->print(&mt("The following recipients were excluded because the user's domain does not accept messages from server's domain:").'<ul><li>'.
+                          join("</li><li>\n",sort(keys(%{$disallowed{'to'}}))).
+                          '</li><ul><br />');
+            }
+            if (ref($disallowed{'cc'}) eq 'HASH') {
+                $r->print(&mt("The following CCs were excluded because the user's domain does not accept messages from server's domain:").'<ul><li>'.
+                          join("</li><li>\n",sort(keys(%{$disallowed{'cc'}}))).
+                          '</li><ul><br />');
+            }
+            if (ref($disallowed{'bcc'}) eq 'HASH') {
+                $r->print(&mt("The following BCCs were excluded because the user's domain does not accept messages from server's domain:").'<ul><li>'.
+                          join("</li><li>\n",sort(keys(%{$disallowed{'bcc'}}))).
+                          '</li><ul><br />');
+            }
+        }
     } else {
         &printheader($r,'','Messages cancelled.');
         return 'cancelled';
@@ -3351,15 +3236,13 @@ sub handler {
     &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},
         ['display','replyto','forward','markread','markdel','markunread',
          'sendreply','compose','sendmail','critical','recname','recdom',
-         'recordftf','sortedby','block','folder','startdis','interdis',
+         'recordftf','sortedby','folder','startdis','interdis',
 	 'showcommentbaseurl','dismode','group','subject','text','ref',
          'msgstatus']);
     $sqs='&amp;sortedby='.$env{'form.sortedby'};
 
 # ------------------------------------------------------ They checked for email
-    unless ($env{'form.block'}) {
-        &Apache::lonnet::put('email_status',{'recnewemail'=>0});
-    }
+    &Apache::lonnet::put('email_status',{'recnewemail'=>0});
 
 # ----------------------------------------------------------------- Breadcrumbs
 
@@ -3562,8 +3445,6 @@ sub handler {
 	&compout($r,'','',$env{'form.compose'});
     } elsif ($env{'form.recordftf'}) {
 	&facetoface($r,$env{'form.recordftf'});
-    } elsif ($env{'form.block'}) {
-        &examblock($r,$env{'form.block'});
     } elsif ($env{'form.sendmail'}) {
         if ($env{'form.multiforward'}) {
             &printheader($r,'','Messages being sent.');