Filter plugin fixes...
[squirrelmail.git] / plugins / filters / filters.php
index a919086ad9626ad84370741c133f9ae9731e3696..11f093321d7d63a65b38bb636173c3ac90bee0c4 100644 (file)
 <?php
-   /*
-    *  Message and Spam Filter Plugin 
-    *  By Luke Ehresman <luke@squirrelmail.org>
-    *     Tyler Akins
-    *     Brent Bice
-    *  (c) 2000 (GNU GPL - see ../../COPYING)
-    *
-    *  This plugin filters your inbox into different folders based upon given
-    *  criteria.  It is most useful for people who are subscibed to mailing lists
-    *  to help organize their messages.  The argument stands that filtering is
-    *  not the place of the client, which is why this has been made a plugin for
-    *  SquirrelMail.  You may be better off using products such as Sieve or
-    *  Procmail to do your filtering so it happens even when SquirrelMail isn't
-    *  running.
-    *
-    *  If you need help with this, or see improvements that can be made, please
-    *  email me directly at the address above.  I definately welcome suggestions
-    *  and comments.  This plugin, as is the case with all SquirrelMail plugins,
-    *  is not directly supported by the developers.  Please come to me off the
-    *  mailing list if you have trouble with it.
-    *
-    *  Also view plugins/README.plugins for more information.
-    *
-    */
-    
-   function start_filters() {
-      global $username, $key, $imapServerAddress, $imapPort, $imap,
-         $imap_general, $filters, $imap_stream, $imapConnection, 
-        $UseSeparateImapConnection, $AllowSpamFilters;
-
-      // Detect if we have already connected to IMAP or not.
-      // Also check if we are forced to use a separate IMAP connection
-      if ((!isset($imap_stream) && !isset($imapConnection)) ||
-          $UseSeparateImapConnection) {
-         $stream = sqimap_login($username, $key, $imapServerAddress, 
-           $imapPort, 10);
-         $previously_connected = false;
-      } elseif (isset($imapConnection)) {
-         $stream = $imapConnection;
-         $previously_connected = true;
-      } else {
-         $previously_connected = true;
-        $stream = $imap_stream;
-      }
-
-      if (sqimap_get_num_messages($stream, "INBOX") > 0) {
-         // Filter spam from inbox before we sort them into folders
-         if ($AllowSpamFilters)
-            spam_filters($stream);
-        
-         // Sort into folders
-         user_filters($stream);
-      }
-      
-      if (!$previously_connected)
-         sqimap_logout($stream);
-   }
-
-
-   function user_filters($imap_stream) {
-      $filters = load_filters();
-      if (! $filters) return;
-      
-      sqimap_mailbox_select($imap_stream, 'INBOX');
-      
-      // For every rule
-      for ($i=0; $i < count($filters); $i++) {
-         // If it is the "combo" rule
-         if ($filters[$i]["where"] == "To or Cc") {
+
+/**
+ * Message and Spam Filter Plugin
+ *
+ * Copyright (c) 1999-2002 The SquirrelMail Project Team
+ * Licensed under the GNU GPL. For full terms see the file COPYING.
+ *
+ * This plugin filters your inbox into different folders based upon given
+ * criteria.  It is most useful for people who are subscibed to mailing lists
+ * to help organize their messages.  The argument stands that filtering is
+ * not the place of the client, which is why this has been made a plugin for
+ * SquirrelMail.  You may be better off using products such as Sieve or
+ * Procmail to do your filtering so it happens even when SquirrelMail isn't
+ * running.
+ *
+ * If you need help with this, or see improvements that can be made, please
+ * email me directly at the address above.  I definately welcome suggestions
+ * and comments.  This plugin, as is the case with all SquirrelMail plugins,
+ * is not directly supported by the developers.  Please come to me off the
+ * mailing list if you have trouble with it.
+ *
+ * Also view plugins/README.plugins for more information.
+ *
+ * $Id$
+ */
+
+function filters_sqimap_read_data ($imap_stream, $pre, $handle_errors, &$response, &$message) {
+    global $color, $squirrelmail_language, $imap_general_debug;
+
+    $data = array();
+    $size = 0;
+
+    do {
+        $read = fgets($imap_stream, 9096);
+        if (ereg("^$pre (OK|BAD|NO)(.*)$", $read, $regs)) {
+            break;  // found end of reply
+        }
+
+        // Continue if needed for this single line
+        while (strpos($read, "\n") === false) {
+            $read .= fgets($imap_stream, 9096);
+        }
+
+        $data[] = $read;
+
+        if (ereg("^\\* [0-9]+ FETCH.*\\{([0-9]+)\\}", $read, $regs)) {
+            $size = $regs[1];
+            if ($imap_general_debug) {
+                echo "<small><tt><font color=\"#CC0000\">Size is $size</font></tt></small><br>\n";
+            }
+
+            $total_size = 0;
+            do {
+                $read = fgets($imap_stream, 9096);
+                if ($imap_general_debug) {
+                    echo "<small><tt><font color=\"#CC0000\">$read</font></tt></small><br>\n";
+                    flush();
+                }
+                $data[] = $read;
+                $total_size += strlen($read);
+            } while ($total_size < $size);
+
+            $size = 0;
+        }
+        // For debugging purposes
+        if ($imap_general_debug) {
+            echo "<small><tt><font color=\"#CC0000\">$read</font></tt></small><br>\n";
+            flush();
+        }
+    } while (true);
+
+    $response = $regs[1];
+    $message = trim($regs[2]);
+
+    if ($imap_general_debug) {
+        echo '--<br>';
+    }
+
+    if (!$handle_errors) {
+        return $data;
+    }
+
+    if ($response == 'NO') {
+        // ignore this error from m$ exchange, it is not fatal (aka bug)
+        if (strstr($message, 'command resulted in') === false) {
+            set_up_language($squirrelmail_language);
+            echo "<br><b><font color=$color[2]>\n" .
+                 _("ERROR : Could not complete request.") .
+                 "</b><br>\n" .
+                 _("Reason Given: ") .
+                 $message . "</font><br>\n";
+            exit;
+        }
+    } else if ($response == 'BAD') {
+        set_up_language($squirrelmail_language);
+        echo "<br><b><font color=$color[2]>\n" .
+             _("ERROR : Bad or malformed request.") .
+             "</b><br>\n" .
+             _("Server responded: ") .
+             $message . "</font><br>\n";
+        exit;
+    }
+
+    return $data;
+}
+
+
+function start_filters() {
+    global $mailbox, $username, $key, $imapServerAddress, $imapPort, $imap,
+        $imap_general, $filters, $imap_stream, $imapConnection,
+    $UseSeparateImapConnection, $AllowSpamFilters;
+
+#    if ($mailbox == 'INBOX') {
+        // Detect if we have already connected to IMAP or not.
+        // Also check if we are forced to use a separate IMAP connection
+        if ((!isset($imap_stream) && !isset($imapConnection)) ||
+            $UseSeparateImapConnection) {
+                $stream = sqimap_login($username, $key, $imapServerAddress,
+                                    $imapPort, 10);
+                $previously_connected = false;
+        } elseif (isset($imapConnection)) {
+            $stream = $imapConnection;
+            $previously_connected = true;
+        } else {
+            $previously_connected = true;
+            $stream = $imap_stream;
+        }
+
+        if (sqimap_get_num_messages($stream, 'INBOX') > 0) {
+            // Filter spam from inbox before we sort them into folders
+            if ($AllowSpamFilters) {
+                spam_filters($stream);
+            }
+
+            // Sort into folders
+            user_filters($stream);
+        }
+
+        if (!$previously_connected) {
+            sqimap_logout($stream);
+        }
+#    }
+}
+
+
+function user_filters($imap_stream) {
+    $filters = load_filters();
+    if (! $filters) return;
+
+    sqimap_mailbox_select($imap_stream, 'INBOX');
+
+    // For every rule
+    for ($i=0; $i < count($filters); $i++) {
+        // If it is the "combo" rule
+        if ($filters[$i]['where'] == 'To or Cc') {
             /*
-             *  If it's "TO OR CC", we have to do two searches, one for TO
-             *  and the other for CC.
-             */
-           filter_search_and_delete($imap_stream, 'TO',
-              $filters[$i]['what'], $filters[$i]['folder']);
-           filter_search_and_delete($imap_stream, 'CC',
-              $filters[$i]['what'], $filters[$i]['folder']);
-         } else {
+            *  If it's "TO OR CC", we have to do two searches, one for TO
+            *  and the other for CC.
+            */
+            filter_search_and_delete($imap_stream, 'TO',
+            $filters[$i]['what'], $filters[$i]['folder']);
+            filter_search_and_delete($imap_stream, 'CC',
+            $filters[$i]['what'], $filters[$i]['folder']);
+        } else {
             /*
-             *  If it's a normal TO, CC, SUBJECT, or FROM, then handle it 
-            *  normally.
-             */
-           filter_search_and_delete($imap_stream, $filters[$i]['where'],
-              $filters[$i]['what'], $filters[$i]['folder']);
-         }
-      }
-      // Clean out the mailbox whether or not auto_expunge is on
-      // That way it looks like it was redirected properly
-      sqimap_mailbox_expunge($imap_stream, 'INBOX');
-   }
-   
-   function filter_search_and_delete($imap, $where, $what, $where_to) {
-      fputs ($imap, 'a001 SEARCH ALL ' . $where . ' "' . addslashes($what) . 
-         "\"\r\n");
-      $read = sqimap_read_data ($imap, 'a001', true, $response, $message);
-      
-      // This may have problems with EIMS due to it being goofy
-      
-      for ($r=0; $r < count($read) && 
-                 substr($read[$r], 0, 8) != '* SEARCH'; $r++) {}
-      if ($response == 'OK') {
-         $ids = explode(' ', $read[$r]);
-        if (sqimap_mailbox_exists($imap, $where_to)) {
+            *  If it's a normal TO, CC, SUBJECT, or FROM, then handle it
+            *  normally.
+            */
+            filter_search_and_delete($imap_stream, $filters[$i]['where'],
+            $filters[$i]['what'], $filters[$i]['folder']);
+        }
+    }
+    // Clean out the mailbox whether or not auto_expunge is on
+    // That way it looks like it was redirected properly
+    sqimap_mailbox_expunge($imap_stream, 'INBOX');
+}
+
+function filter_search_and_delete($imap, $where, $what, $where_to) {
+    // Don't mess with the " characters on this fputs line!
+    fputs ($imap, 'a001 SEARCH ALL ' . $where . ' "' . addslashes($what) .
+        "\"\r\n");
+    $read = filters_sqimap_read_data ($imap, 'a001', true, $response, $message);
+
+    // This may have problems with EIMS due to it being goofy
+
+    for ($r=0; $r < count($read) &&
+                substr($read[$r], 0, 8) != '* SEARCH'; $r++) {}
+    if ($response == 'OK') {
+        $ids = explode(' ', $read[$r]);
+        if (sqimap_mailbox_exists($imap, $where_to)) {
             for ($j=2; $j < count($ids); $j++) {
-              $id = trim($ids[$j]);
-               sqimap_messages_copy ($imap, $id, $id, $where_to);
-               sqimap_messages_flag ($imap, $id, $id, 'Deleted');
+                $id = trim($ids[$j]);
+                sqimap_messages_copy ($imap, $id, $id, $where_to);
+                sqimap_messages_flag ($imap, $id, $id, 'Deleted');
             }
-         }
-      }
-   }
-
-   // These are the spam filters
-   function spam_filters($imap_stream) {
-      global $data_dir, $username;
-      global $SpamFilters_YourHop;
-      global $SpamFilters_DNScache;
-
-      $filters_spam_scan = getPref($data_dir, $username, "filters_spam_scan");
-      $filters_spam_folder = getPref($data_dir, $username, "filters_spam_folder");
-      $filters = load_spam_filters();
-      
-      $run = 0;
-      
-      foreach ($filters as $Key=> $Value) {
-         if ($Value['enabled'])
+        }
+    }
+}
+
+// These are the spam filters
+function spam_filters($imap_stream) {
+    global $data_dir, $username;
+    global $SpamFilters_YourHop;
+    global $SpamFilters_DNScache;
+
+    $filters_spam_scan = getPref($data_dir, $username, 'filters_spam_scan');
+    $filters_spam_folder = getPref($data_dir, $username, 'filters_spam_folder');
+    $filters = load_spam_filters();
+
+    $run = 0;
+
+    foreach ($filters as $Key=> $Value) {
+        if ($Value['enabled']) {
             $run ++;
-      }
-      
-      // short-circuit
-      if ($run == 0) {
-          return;
-      }
-      
-      sqimap_mailbox_select($imap_stream, 'INBOX');
-      
-      // Ask for a big list of all "Received" headers in the inbox with 
-      // flags for each message.  Kinda big.
-      fputs($imap_stream, 'A3999 FETCH 1:* (FLAGS BODY.PEEK[HEADER.FIELDS ' .
-       "(RECEIVED)])\r\n");
-      
-      $read = sqimap_read_data ($imap_stream, 'A3999', true, $response, $message);
-      
-      if ($response != 'OK')
-          return;
-
-      $i = 0;
-      while ($i < count($read)) {
-          // EIMS will give funky results
-          $Chunks = explode(' ', $read[$i]);
-          if ($Chunks[0] != '*') {
-              $i ++;
-              continue;
-          }
-          $MsgNum = $Chunks[1];
-
-          $IPs = array();
-          $i ++;
-          $IsSpam = 0;
-          $Scan = 1;
-          
-         // Check for normal IMAP servers
-          if ($filters_spam_scan == 'new') {
-              if (is_int(strpos($Chunks[4], '\Seen'))) {
-                  $Scan = 0;
-              }
-          }
-         
-         // Look through all of the Received headers for IP addresses
-         // Stop when I get ")" on a line
-         // Stop if I get "*" on a line (don't advance)
-          // and above all, stop if $i is bigger than the total # of lines
-          while (($i < count($read)) &&
-                 ($read[$i][0] != ')' && $read[$i][0] != '*' &&
-                 $read[$i][0] != "\n") && (! $IsSpam))
-         {
-              // Check to see if this line is the right "Received from" line
-              // to check
-              if (is_int(strpos($read[$i], $SpamFilters_YourHop))) {
-
-                // short-circuit and skip work if we don't scan this one
-                 if ($Scan) {
-                     $read[$i] = ereg_replace('[^0-9\.]', ' ', $read[$i]);
-                     $elements = explode(' ', $read[$i]);
-                     foreach ($elements as $value) {
-                     if ($value != '' &&
-                          ereg('[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}',
-                            $value, $regs)) {
-                         $Chunks = explode('.', $value);
-                          if ("$SpamFilters_DNScache[$value]" == "") {
-                             $SpamFilters_DNScache[$value] =
-                                filters_spam_check_site($Chunks[0], $Chunks[1],
-                                     $Chunks[2], $Chunks[3], $filters);
-                         }
-                         if ($SpamFilters_DNScache[$value]) {
-                           $IsSpam ++;
-                            break;  // no sense in checking more IPs
-                         }
-                      }
-                     }
-                 }
-              }
-              $i ++;
-          }
-
-          // Lookie!  It's spam!  Yum!
-          if ($IsSpam) {
-              if (sqimap_mailbox_exists ($imap_stream, $filters_spam_folder)) {
-                  sqimap_messages_copy ($imap_stream, $MsgNum, $MsgNum,
-                                        $filters_spam_folder);
-                  sqimap_messages_flag ($imap_stream, $MsgNum, $MsgNum, 
-                                        'Deleted');
-              }
-          }
-      }
-      
-      sqimap_mailbox_expunge($imap_stream, 'INBOX');
-   }   
-
-  
-   // Does the loop through each enabled filter for the specified IP address.
-   // IP format:  $a.$b.$c.$d
-   function filters_spam_check_site($a, $b, $c, $d, &$filters) {
-      foreach ($filters as $key => $value) {
-          if ($filters[$key]['enabled']) {
-              if ($filters[$key]['dns']) {
-                  if (checkdnsrr("$d.$c.$b.$a." . $filters[$key]['dns'],
-                     'ANY')) {
-                      return 1;
-                  }
-              }
-          }
-      }
-      return 0;
-   }
-   
-   function load_filters() {
-      global $data_dir, $username;
-      $filters = array();
-      for ($i=0; $fltr = getPref($data_dir, $username, 'filter' . $i); $i++) {
-         $ary = explode(',', $fltr);
-         $filters[$i]['where'] = $ary[0];
-         $filters[$i]['what'] = $ary[1];
-         $filters[$i]['folder'] = $ary[2];
-      }
-      return $filters;
-   }
-
-   function load_spam_filters() {
-      global $data_dir, $username;
-      
-      $filters['MAPS RBL']['prefname'] = 'filters_spam_maps_rbl';
-      $filters['MAPS RBL']['name'] = 'MAPS Realtime Blackhole List';
-      $filters['MAPS RBL']['link'] = 'http://www.mail-abuse.org/rbl/';
-      $filters['MAPS RBL']['dns'] = 'blackholes.mail-abuse.org';
-      $filters['MAPS RBL']['comment'] = 
-_("COMMERCIAL - This list contains servers that are verified spam senders. It is a pretty reliable list to scan spam from.");
-      
-      $filters['MAPS RSS']['prefname'] = 'filters_spam_maps_rss';
-      $filters['MAPS RSS']['name'] = 'MAPS Relay Spam Stopper';
-      $filters['MAPS RSS']['link'] = 'http://www.mail-abuse.org/rss/';
-      $filters['MAPS RSS']['dns'] = 'relays.mail-abuse.org';
-      $filters['MAPS RSS']['comment'] =
-_("COMMERCIAL - Servers that are configured (or misconfigured) to allow spam to be relayed through their system will be banned with this.  Another good one to use.");
-
-      $filters['MAPS DUL']['prefname'] = 'filters_spam_maps_dul';
-      $filters['MAPS DUL']['name'] = 'MAPS Dial-Up List';
-      $filters['MAPS DUL']['link'] = 'http://www.mail-abuse.org/dul/';
-      $filters['MAPS DUL']['dns'] = 'dialups.mail-abuse.org';
-      $filters['MAPS DUL']['comment'] =
-_("COMMERCIAL - Dial-up users are often filtered out since they should use their ISP\'s mail servers to send mail.  Spammers typically get a dial-up account and send spam directly from there.");
-
-      $filters['MAPS RBLplus']['prefname'] = 'filters_spam_maps_rblplus';
-      $filters['MAPS RBLplus']['name'] = 'MAPS RBL+ List';
-      $filters['MAPS RBLplus']['link'] = 'http://www.mail-abuse.org/';
-      $filters['MAPS RBLplus']['dns'] = 'rbl-plus.mail-abuse.org';
-      $filters['MAPS RBLplus']['comment'] =
-_("COMMERCIAL - RBL+ is a combination of RSS, DUL, and RBL.");
-
-      $filters['Osirusoft']['prefname'] = 'filters_spam_maps_osirusoft';
-      $filters['Osirusoft']['name'] = 'Osirusoft List';
-      $filters['Osirusoft']['link'] = 'http://relays.osirusoft.com/';
-      $filters['Osirusoft']['dns'] = 'relays.osirusoft.com';
-      $filters['Osirusoft']['comment'] =
-_("FREE - Osirusoft - Very thorough, but also rejects replies from many ISP\'s abuse@domain.name email messages for some reason.");
-
-      $filters['ORDB']['prefname'] = 'filters_spam_ordb';
-      $filters['ORDB']['name'] = 'Open Relay Database List';
-      $filters['ORDB']['link'] = 'http://www.ordb.org/';
-      $filters['ORDB']['dns'] = 'relays.ordb.org';
-      $filters['ORDB']['comment'] =
-_("FREE - ORDB was born when ORBS went off the air. It seems to have fewer false positives than ORBS did though.");
-      
-      $filters['ORBZ']['prefname'] = 'filters_spam_orbz';
-      $filters['ORBZ']['name'] = 'ORBZ List';
-      $filters['ORBZ']['link'] = 'http://www.orbz.org/';
-      $filters['ORBZ']['dns'] = 'inputs.orbz.org';
-      $filters['ORBZ']['comment'] =
-_("FREE - Another ORBS replacement (just the INPUTS database used here).");
-      
-      $filters['Five-Ten']['prefname'] = 'filters_spam_fiveten';
-      $filters['Five-Ten']['name'] = 'Five-Ten-sg.com Lists';
-      $filters['Five-Ten']['link'] = 'http://www.five-ten-sg.com/blackhole.php';
-      $filters['Five-Ten']['dns'] = 'blackholes.five-ten-sg.com';
-      $filters['Five-Ten']['comment'] =
-_("FREE - Five-Ten-sg.com has SPAM source, OpenRelay, and Dialup IPs.");
-      
-      $filters['Dorkslayers']['prefname'] = 'filters_spam_dorks';
-      $filters['Dorkslayers']['name'] = 'Dorkslayers Lists';
-      $filters['Dorkslayers']['link'] = 'http://www.dorkslayers.com';
-      $filters['Dorkslayers']['dns'] = 'orbs.dorkslayers.com';
-      $filters['Dorkslayers']['comment'] =
-_("FREE - Dorkslayers appears to include only really bad open relays outside the US to avoid being sued. Interestingly enough, their website recommends you NOT use their service.");
-      
-      $filters['ORBL']['prefname'] = 'filters_spam_orbl';
-      $filters['ORBL']['name'] = 'ORBL Lists';
-      $filters['ORBL']['link'] = 'http://www.orbl.org';
-      $filters['ORBL']['dns'] = 'or.orbl.org';
-      $filters['ORBL']['comment'] =
-_("FREE - ORBL is another ORBS spinoff formed after ORBS shut down. May be SLOOOOOOW!");
-      
-      $filters['ORBZ-UK']['prefname'] = 'filters_spam_orbzuk';
-      $filters['ORBZ-UK']['name'] = 'ORBZ-UK Lists';
-      $filters['ORBZ-UK']['link'] = 'http://orbz.gst-group.co.uk';
-      $filters['ORBZ-UK']['dns'] = 'orbz.gst-group.co.uk';
-      $filters['ORBZ-UK']['comment'] =
-_("FREE - orbz.gst-group.co.uk lists not only open relays, but also mailservers that refuse or bounce email addressed to postmaster@<theirdomain>.");
-      
-      foreach ($filters as $Key => $Value) {
-          $filters[$Key]['enabled'] = getPref($data_dir, $username,
-              $filters[$Key]['prefname']);
-      }
-      
-      return $filters;
-   }
-
-   function remove_filter ($id) {
-      global $data_dir, $username;
-      
-      while ($nextFilter = getPref($data_dir, $username, 'filter' . 
-         ($id + 1))) {
-         setPref($data_dir, $username, 'filter' . $id, $nextFilter);
-        $id ++;
-      }
-      
-      removePref($data_dir, $username, 'filter' . $id);
-   }
-   
-   function filter_swap($id1, $id2) {
-      global $data_dir, $username;
-      
-      $FirstFilter = getPref($data_dir, $username, 'filter' . $id1);
-      $SecondFilter = getPref($data_dir, $username, 'filter' . $id2);
-      
-      if ($FirstFilter && $SecondFilter) {
-         setPref($data_dir, $username, 'filter' . $id2, $FirstFilter);
-         setPref($data_dir, $username, 'filter' . $id1, $SecondFilter);
-      }
-   }
+        }
+    }
+
+    // short-circuit
+    if ($run == 0) {
+        return;
+    }
+
+    sqimap_mailbox_select($imap_stream, 'INBOX');
+
+    // Ask for a big list of all "Received" headers in the inbox with
+    // flags for each message.  Kinda big.
+    fputs($imap_stream, 'A3999 FETCH 1:* (FLAGS BODY.PEEK[HEADER.FIELDS ' .
+        "(RECEIVED)])\r\n");
+
+    $read = filters_sqimap_read_data ($imap_stream, 'A3999', true,
+                                    $response, $message);
+
+    if ($response != 'OK') {
+        return;
+    }
+
+    $i = 0;
+    while ($i < count($read)) {
+        // EIMS will give funky results
+        $Chunks = explode(' ', $read[$i]);
+        if ($Chunks[0] != '*') {
+            $i ++;
+            continue;
+        }
+        $MsgNum = $Chunks[1];
+
+        $IPs = array();
+        $i ++;
+        $IsSpam = 0;
+        $Scan = 1;
+
+        // Check for normal IMAP servers
+        if ($filters_spam_scan == 'new') {
+            if (is_int(strpos($Chunks[4], '\Seen'))) {
+                $Scan = 0;
+            }
+        }
+
+        // Look through all of the Received headers for IP addresses
+        // Stop when I get ")" on a line
+        // Stop if I get "*" on a line (don't advance)
+        // and above all, stop if $i is bigger than the total # of lines
+        while (($i < count($read)) &&
+                ($read[$i][0] != ')' && $read[$i][0] != '*' &&
+                $read[$i][0] != "\n") && (! $IsSpam)) {
+            // Check to see if this line is the right "Received from" line
+            // to check
+            if (is_int(strpos($read[$i], $SpamFilters_YourHop))) {
+
+                // short-circuit and skip work if we don't scan this one
+                if ($Scan) {
+                    $read[$i] = ereg_replace('[^0-9\.]', ' ', $read[$i]);
+                    $elements = explode(' ', $read[$i]);
+                    foreach ($elements as $value) {
+                        if ($value != '' &&
+                            ereg('[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}',
+                                $value, $regs)) {
+                            $Chunks = explode('.', $value);
+                            if (filters_spam_check_site($Chunks[0],
+                                    $Chunks[1], $Chunks[2], $Chunks[3],
+                                    $filters)) {
+                                $IsSpam ++;
+                                break;  // no sense in checking more IPs
+                            }
+                            // If we've checked one IP and YourHop is
+                            // just a space
+                            if ($SpamFilters_YourHop == ' ') {
+                                break;  // don't check any more
+                            }
+                        }
+                    }
+                }
+            }
+            $i ++;
+        }
+
+        // Lookie!  It's spam!  Yum!
+        if ($IsSpam) {
+            if (sqimap_mailbox_exists($imap_stream, $filters_spam_folder)) {
+                sqimap_messages_copy ($imap_stream, $MsgNum, $MsgNum,
+                                    $filters_spam_folder);
+                sqimap_messages_flag ($imap_stream, $MsgNum, $MsgNum,
+                                    'Deleted');
+            }
+        } else {
+        }
+    }
+
+    sqimap_mailbox_expunge($imap_stream, 'INBOX');
+
+    session_register('SpamFilters_DNScache');
+}
+
+
+// Does the loop through each enabled filter for the specified IP address.
+// IP format:  $a.$b.$c.$d
+function filters_spam_check_site($a, $b, $c, $d, &$filters) {
+    global $SpamFilters_DNScache;
+    foreach ($filters as $key => $value) {
+        if ($filters[$key]['enabled']) {
+            if ($filters[$key]['dns']) {
+                $filter_revip = $d . '.' . $c . '.' . $b . '.' . $a . '.' .
+                                $filters[$key]['dns'];
+                if (strlen($SpamFilters_DNScache[$filter_revip]) == 0) {
+                    $SpamFilters_DNScache[$filter_revip] =
+                                        gethostbyname($filter_revip);
+                }
+                if ($SpamFilters_DNScache[$filter_revip] ==
+                    $filters[$key]['result']) {
+                    return 1;
+                }
+            }
+        }
+    }
+    return 0;
+}
+
+function load_filters() {
+    global $data_dir, $username;
+    $filters = array();
+    for ($i=0; $fltr = getPref($data_dir, $username, 'filter' . $i); $i++) {
+        $ary = explode(',', $fltr);
+        $filters[$i]['where'] = $ary[0];
+        $filters[$i]['what'] = $ary[1];
+        $filters[$i]['folder'] = $ary[2];
+    }
+    return $filters;
+}
+
+function load_spam_filters() {
+    global $data_dir, $username;
+
+    $filters['MAPS RBL']['prefname'] = 'filters_spam_maps_rbl';
+    $filters['MAPS RBL']['name'] = 'MAPS Realtime Blackhole List';
+    $filters['MAPS RBL']['link'] = 'http://www.mail-abuse.org/rbl/';
+    $filters['MAPS RBL']['dns'] = 'blackholes.mail-abuse.org';
+    $filters['MAPS RBL']['result'] = '127.0.0.2';
+    $filters['MAPS RBL']['comment'] =
+        _("COMMERCIAL - This list contains servers that are verified spam senders. It is a pretty reliable list to scan spam from.");
+
+    $filters['MAPS RSS']['prefname'] = 'filters_spam_maps_rss';
+    $filters['MAPS RSS']['name'] = 'MAPS Relay Spam Stopper';
+    $filters['MAPS RSS']['link'] = 'http://www.mail-abuse.org/rss/';
+    $filters['MAPS RSS']['dns'] = 'relays.mail-abuse.org';
+    $filters['MAPS RSS']['result'] = '127.0.0.2';
+    $filters['MAPS RSS']['comment'] =
+        _("COMMERCIAL - Servers that are configured (or misconfigured) to allow spam to be relayed through their system will be banned with this.  Another good one to use.");
+
+    $filters['MAPS DUL']['prefname'] = 'filters_spam_maps_dul';
+    $filters['MAPS DUL']['name'] = 'MAPS Dial-Up List';
+    $filters['MAPS DUL']['link'] = 'http://www.mail-abuse.org/dul/';
+    $filters['MAPS DUL']['dns'] = 'dialups.mail-abuse.org';
+    $filters['MAPS DUL']['result'] = '127.0.0.3';
+    $filters['MAPS DUL']['comment'] =
+        _("COMMERCIAL - Dial-up users are often filtered out since they should use their ISP's mail servers to send mail.  Spammers typically get a dial-up account and send spam directly from there.");
+
+    $filters['MAPS RBLplus-RBL']['prefname'] = 'filters_spam_maps_rblplus_rbl';
+    $filters['MAPS RBLplus-RBL']['name'] = 'MAPS RBL+ RBL List';
+    $filters['MAPS RBLplus-RBL']['link'] = 'http://www.mail-abuse.org/';
+    $filters['MAPS RBLplus-RBL']['dns'] = 'rbl-plus.mail-abuse.org';
+    $filters['MAPS RBLplus-RBL']['result'] = '127.0.0.2';
+    $filters['MAPS RBLplus-RBL']['comment'] =
+        _("COMMERCIAL - RBL+ Blackhole entries.");
+
+    $filters['MAPS RBLplus-RSS']['prefname'] = 'filters_spam_maps_rblplus_rss';
+    $filters['MAPS RBLplus-RSS']['name'] = 'MAPS RBL+ List RSS entries';
+    $filters['MAPS RBLplus-RSS']['link'] = 'http://www.mail-abuse.org/';
+    $filters['MAPS RBLplus-RSS']['dns'] = 'rbl-plus.mail-abuse.org';
+    $filters['MAPS RBLplus-RSS']['result'] = '127.0.0.2';
+    $filters['MAPS RBLplus-RSS']['comment'] =
+        _("COMMERCIAL - RBL+ OpenRelay entries.");
+
+    $filters['MAPS RBLplus-DUL']['prefname'] = 'filters_spam_maps_rblplus_dul';
+    $filters['MAPS RBLplus-DUL']['name'] = 'MAPS RBL+ List DUL entries';
+    $filters['MAPS RBLplus-DUL']['link'] = 'http://www.mail-abuse.org/';
+    $filters['MAPS RBLplus-DUL']['dns'] = 'rbl-plus.mail-abuse.org';
+    $filters['MAPS RBLplus-DUL']['result'] = '127.0.0.3';
+    $filters['MAPS RBLplus-DUL']['comment'] =
+        _("COMMERCIAL - RBL+ Dial-up entries.");
+
+    $filters['Osirusoft Relays']['prefname'] = 'filters_spam_maps_osirusoft_relay';
+    $filters['Osirusoft Relays']['name'] = 'Osirusoft Relay List';
+    $filters['Osirusoft Relays']['link'] = 'http://relays.osirusoft.com/';
+    $filters['Osirusoft Relays']['dns'] = 'relays.osirusoft.com';
+    $filters['Osirusoft Relays']['result'] = '127.0.0.2';
+    $filters['Osirusoft Relays']['comment'] =
+        _("FREE - Osirusoft Relays - Osirusofts list of verified open relays. Seems to include servers used by abuse@uunet.net auto-replies too.");
+
+    $filters['Osirusoft DUL']['prefname'] = 'filters_spam_maps_osirusoft_dul';
+    $filters['Osirusoft DUL']['name'] = 'Osirusoft Dialup List';
+    $filters['Osirusoft DUL']['link'] = 'http://relays.osirusoft.com/';
+    $filters['Osirusoft DUL']['dns'] = 'relays.osirusoft.com';
+    $filters['Osirusoft DUL']['result'] = '127.0.0.3';
+    $filters['Osirusoft DUL']['comment'] =
+        _("FREE - Osirusoft Dialups - Osirusofts Dialup Spam Source list.");
+
+    $filters['Osirusoft Spam Source']['prefname'] = 'filters_spam_maps_osirusoft_rc';
+    $filters['Osirusoft Spam Source']['name'] = 'Osirusoft Confirmed Spam Source List';
+    $filters['Osirusoft Spam Source']['link'] = 'http://relays.osirusoft.com/';
+    $filters['Osirusoft Spam Source']['dns'] = 'relays.osirusoft.com';
+    $filters['Osirusoft Spam Source']['result'] = '127.0.0.4';
+    $filters['Osirusoft Spam Source']['comment'] =
+        _("FREE - Osirusoft Confirmed Spam Source - Sites that continually spam and have been manually added after multiple nominations. Use with caution. Seems to catch abuse auto-replies from some ISPs.");
+
+    $filters['Osirusoft Smart Host']['prefname'] = 'filters_spam_maps_osirusoft_sh';
+    $filters['Osirusoft Smart Host']['name'] = 'Osirusoft Smart Host List';
+    $filters['Osirusoft Smart Host']['link'] = 'http://relays.osirusoft.com/';
+    $filters['Osirusoft Smart Host']['dns'] = 'relays.osirusoft.com';
+    $filters['Osirusoft Smart Host']['result'] = '127.0.0.5';
+    $filters['Osirusoft Smart Host']['comment'] =
+        _("FREE - Osirusoft Smart Hosts - List of hosts that are secure but relay for other mail servers that are not secure.");
+
+    $filters['Osirusoft SPAMware']['prefname'] = 'filters_spam_maps_osirusoft_ss';
+    $filters['Osirusoft SPAMware']['name'] = 'Osirusoft Spamware Developers List';
+    $filters['Osirusoft SPAMware']['link'] = 'http://relays.osirusoft.com/';
+    $filters['Osirusoft SPAMware']['dns'] = 'relays.osirusoft.com';
+    $filters['Osirusoft SPAMware']['result'] = '127.0.0.6';
+    $filters['Osirusoft SPAMware']['comment'] =
+        _("FREE - Osirusoft Spamware Developers - It is believed that these are IP ranges of companies that are known to produce spam software. Seems to catch abuse auto-replies from some ISPs.");
+
+    $filters['Osirusoft Unc. OptIn']['prefname'] = 'filters_spam_maps_osirusoft_sl';
+    $filters['Osirusoft Unc. OptIn']['name'] = 'Osirusoft Unconfirmed OptIn Server List';
+    $filters['Osirusoft Unc. OptIn']['link'] = 'http://relays.osirusoft.com/';
+    $filters['Osirusoft Unc. OptIn']['dns'] = 'relays.osirusoft.com';
+    $filters['Osirusoft Unc. OptIn']['result'] = '127.0.0.7';
+    $filters['Osirusoft Unc. OptIn']['comment'] =
+        _("FREE - Osirusoft Unconfirmed OptIn Servers - List of listservers that opt users in without confirmation.");
+
+    $filters['Osirusoft Insecure Formmail']['prefname'] = 'filters_spam_maps_osirusoft_fm';
+    $filters['Osirusoft Insecure Formmail']['name'] = 'Osirusoft Insecure formmail.cvi Script List';
+    $filters['Osirusoft Insecure Formmail']['link'] = 'http://relays.osirusoft.com/';
+    $filters['Osirusoft Insecure Formmail']['dns'] = 'relays.osirusoft.com';
+    $filters['Osirusoft Insecure Formmail']['result'] = '127.0.0.8';
+    $filters['Osirusoft Insecure Formmail']['comment'] =
+        _("FREE - Osirusoft Insecure formmail.cgi scripts - List of insecure formmail.cgi scripts. (planned).");
+
+    $filters['Osirusoft Open Proxy']['prefname'] = 'filters_spam_maps_osirusoft_op';
+    $filters['Osirusoft Open Proxy']['name'] = 'Osirusoft Open Proxy Server List';
+    $filters['Osirusoft Open Proxy']['link'] = 'http://relays.osirusoft.com/';
+    $filters['Osirusoft Open Proxy']['dns'] = 'relays.osirusoft.com';
+    $filters['Osirusoft Open Proxy']['result'] = '127.0.0.9';
+    $filters['Osirusoft Open Proxy']['comment'] =
+        _("FREE - Osirusoft Open Proxy Servers - List of Open Proxy Servers.");
+
+    $filters['ORDB']['prefname'] = 'filters_spam_ordb';
+    $filters['ORDB']['name'] = 'Open Relay Database List';
+    $filters['ORDB']['link'] = 'http://www.ordb.org/';
+    $filters['ORDB']['dns'] = 'relays.ordb.org';
+    $filters['ORDB']['result'] = '127.0.0.2';
+    $filters['ORDB']['comment'] =
+        _("FREE - ORDB was born when ORBS went off the air. It seems to have fewer false positives than ORBS did though.");
+
+    $filters['ORBZ Inputs']['prefname'] = 'filters_spam_orbz';
+    $filters['ORBZ Inputs']['name'] = 'ORBZ Inputs List';
+    $filters['ORBZ Inputs']['link'] = 'http://www.orbz.org/';
+    $filters['ORBZ Inputs']['dns'] = 'inputs.orbz.org';
+    $filters['ORBZ Inputs']['result'] = '127.0.0.2';
+    $filters['ORBZ Inputs']['comment'] =
+        _("FREE - Another ORBS replacement (just the INPUTS database used here).");
+
+    $filters['ORBZ Outputs']['prefname'] = 'filters_spam_orbz_outputs';
+    $filters['ORBZ Outputs']['name'] = 'ORBZ Outputs List';
+    $filters['ORBZ Outputs']['link'] = 'http://www.orbz.org/';
+    $filters['ORBZ Outputs']['dns'] = 'outputs.orbz.org';
+    $filters['ORBZ Outputs']['result'] = '127.0.0.2';
+    $filters['ORBZ Outputs']['comment'] =
+        _("FREE - Another ORBS replacement (just the OUTPUTS database used here).");
+
+    $filters['FiveTen Direct']['prefname'] = 'filters_spam_fiveten_src';
+    $filters['FiveTen Direct']['name'] = 'Five-Ten-sg.com Direct SPAM Sources';
+    $filters['FiveTen Direct']['link'] = 'http://www.five-ten-sg.com/blackhole.php';
+    $filters['FiveTen Direct']['dns'] = 'blackholes.five-ten-sg.com';
+    $filters['FiveTen Direct']['result'] = '127.0.0.2';
+    $filters['FiveTen Direct']['comment'] =
+        _("FREE - Five-Ten-sg.com - Direct SPAM sources.");
+
+    $filters['FiveTen DUL']['prefname'] = 'filters_spam_fiveten_dul';
+    $filters['FiveTen DUL']['name'] = 'Five-Ten-sg.com DUL Lists';
+    $filters['FiveTen DUL']['link'] = 'http://www.five-ten-sg.com/blackhole.php';
+    $filters['FiveTen DUL']['dns'] = 'blackholes.five-ten-sg.com';
+    $filters['FiveTen DUL']['result'] = '127.0.0.3';
+    $filters['FiveTen DUL']['comment'] =
+        _("FREE - Five-Ten-sg.com - Dial-up lists - includes some DSL IPs.");
+
+    $filters['FiveTen Unc. OptIn']['prefname'] = 'filters_spam_fiveten_oi';
+    $filters['FiveTen Unc. OptIn']['name'] = 'Five-Ten-sg.com Unconfirmed OptIn Lists';
+    $filters['FiveTen Unc. OptIn']['link'] = 'http://www.five-ten-sg.com/blackhole.php';
+    $filters['FiveTen Unc. OptIn']['dns'] = 'blackholes.five-ten-sg.com';
+    $filters['FiveTen Unc. OptIn']['result'] = '127.0.0.4';
+    $filters['FiveTen Unc. OptIn']['comment'] =
+        _("FREE - Five-Ten-sg.com - Bulk mailers that do not use confirmed opt-in.");
+
+    $filters['FiveTen Others']['prefname'] = 'filters_spam_fiveten_oth';
+    $filters['FiveTen Others']['name'] = 'Five-Ten-sg.com Other Misc. Servers';
+    $filters['FiveTen Others']['link'] = 'http://www.five-ten-sg.com/blackhole.php';
+    $filters['FiveTen Others']['dns'] = 'blackholes.five-ten-sg.com';
+    $filters['FiveTen Others']['result'] = '127.0.0.5';
+    $filters['FiveTen Others']['comment'] =
+        _("FREE - Five-Ten-sg.com - Other misc. servers.");
+
+    $filters['FiveTen Single Stage']['prefname'] = 'filters_spam_fiveten_ss';
+    $filters['FiveTen Single Stage']['name'] = 'Five-Ten-sg.com Single Stage Servers';
+    $filters['FiveTen Single Stage']['link'] = 'http://www.five-ten-sg.com/blackhole.php';
+    $filters['FiveTen Single Stage']['dns'] = 'blackholes.five-ten-sg.com';
+    $filters['FiveTen Single Stage']['result'] = '127.0.0.6';
+    $filters['FiveTen Single Stage']['comment'] =
+        _("FREE - Five-Ten-sg.com - Single Stage servers.");
+
+    $filters['FiveTen SPAM Support']['prefname'] = 'filters_spam_fiveten_supp';
+    $filters['FiveTen SPAM Support']['name'] = 'Five-Ten-sg.com SPAM Support Servers';
+    $filters['FiveTen SPAM Support']['link'] = 'http://www.five-ten-sg.com/blackhole.php';
+    $filters['FiveTen SPAM Support']['dns'] = 'blackholes.five-ten-sg.com';
+    $filters['FiveTen SPAM Support']['result'] = '127.0.0.7';
+    $filters['FiveTen SPAM Support']['comment'] =
+        _("FREE - Five-Ten-sg.com - SPAM Support servers.");
+
+    $filters['FiveTen Web forms']['prefname'] = 'filters_spam_fiveten_wf';
+    $filters['FiveTen Web forms']['name'] = 'Five-Ten-sg.com Web Form IPs';
+    $filters['FiveTen Web forms']['link'] = 'http://www.five-ten-sg.com/blackhole.php';
+    $filters['FiveTen Web forms']['dns'] = 'blackholes.five-ten-sg.com';
+    $filters['FiveTen Web forms']['result'] = '127.0.0.8';
+    $filters['FiveTen Web forms']['comment'] =
+        _("FREE - Five-Ten-sg.com - Web Form IPs.");
+
+    $filters['Dorkslayers']['prefname'] = 'filters_spam_dorks';
+    $filters['Dorkslayers']['name'] = 'Dorkslayers Lists';
+    $filters['Dorkslayers']['link'] = 'http://www.dorkslayers.com';
+    $filters['Dorkslayers']['dns'] = 'orbs.dorkslayers.com';
+    $filters['Dorkslayers']['result'] = '127.0.0.2';
+    $filters['Dorkslayers']['comment'] =
+        _("FREE - Dorkslayers appears to include only really bad open relays outside the US to avoid being sued. Interestingly enough, their website recommends you NOT use their service.");
+
+    $filters['SPAMhaus']['prefname'] = 'filters_spam_spamhaus';
+    $filters['SPAMhaus']['name'] = 'SPAMhaus Lists';
+    $filters['SPAMhaus']['link'] = 'http://www.spamhaus.org';
+    $filters['SPAMhaus']['dns'] = 'sbl.spamhaus.org';
+    $filters['SPAMhaus']['result'] = '127.0.0.6';
+    $filters['SPAMhaus']['comment'] =
+        _("FREE - SPAMhaus - A list of well-known SPAM sources.");
+
+    $filters['SPAMcop']['prefname'] = 'filters_spam_spamcop';
+    $filters['SPAMcop']['name'] = 'SPAM Cop Lists';
+    $filters['SPAMcop']['link'] = 'http://spamcop.net/bl.shtml';
+    $filters['SPAMcop']['dns'] = 'bl.spamcop.net';
+    $filters['SPAMcop']['result'] = '127.0.0.2';
+    $filters['SPAMcop']['comment'] =
+        _("FREE, for now - SPAMCOP - An interesting solution that lists servers that have a very high spam to legit email ratio (85% or more).");
+
+    $filters['dev.null.dk']['prefname'] = 'filters_spam_devnull';
+    $filters['dev.null.dk']['name'] = 'dev.null.dk Lists';
+    $filters['dev.null.dk']['link'] = 'http://dev.null.dk/';
+    $filters['dev.null.dk']['dns'] = 'dev.null.dk';
+    $filters['dev.null.dk']['result'] = '127.0.0.2';
+    $filters['dev.null.dk']['comment'] =
+        _("FREE - dev.null.dk - I don't have any detailed info on this list.");
+
+    $filters['visi.com']['prefname'] = 'filters_spam_visi';
+    $filters['visi.com']['name'] = 'visi.com Relay Stop List';
+    $filters['visi.com']['link'] = 'http://relays.visi.com';
+    $filters['visi.com']['dns'] = 'relays.visi.com';
+    $filters['visi.com']['result'] = '127.0.0.2';
+    $filters['visi.com']['comment'] =
+        _("FREE - visi.com - Relay Stop List. Very conservative OpenRelay List.");
+
+    $filters['2mbit.com Open Relays']['prefname'] = 'filters_spam_2mb_or';
+    $filters['2mbit.com Open Relays']['name'] = '2mbit.com Open Relays List';
+    $filters['2mbit.com Open Relays']['link'] = 'http://www.2mbit.com/sbl.php';
+    $filters['2mbit.com Open Relays']['dns'] = 'blackholes.2mbit.com';
+    $filters['2mbit.com Open Relays']['result'] = '127.0.0.2';
+    $filters['2mbit.com Open Relays']['comment'] =
+        _("FREE - 2mbit.com Open Relays - Another list of Open Relays.");
+
+    $filters['2mbit.com SPAM Source']['prefname'] = 'filters_spam_2mb_ss';
+    $filters['2mbit.com SPAM Source']['name'] = '2mbit.com SPAM Source List';
+    $filters['2mbit.com SPAM Source']['link'] = 'http://www.2mbit.com/sbl.php';
+    $filters['2mbit.com SPAM Source']['dns'] = 'blackholes.2mbit.com';
+    $filters['2mbit.com SPAM Source']['result'] = '127.0.0.4';
+    $filters['2mbit.com SPAM Source']['comment'] =
+        _("FREE - 2mbit.com SPAM Source - List of Direct SPAM Sources.");
+
+    $filters['2mbit.com SPAM ISPs']['prefname'] = 'filters_spam_2mb_isp';
+    $filters['2mbit.com SPAM ISPs']['name'] = '2mbit.com SPAM-friendly ISP List';
+    $filters['2mbit.com SPAM ISPs']['link'] = 'http://www.2mbit.com/sbl.php';
+    $filters['2mbit.com SPAM ISPs']['dns'] = 'blackholes.2mbit.com';
+    $filters['2mbit.com SPAM ISPs']['result'] = '127.0.0.10';
+    $filters['2mbit.com SPAM ISPs']['comment'] =
+        _("FREE - 2mbit.com SPAM ISPs - List of SPAM-friendly ISPs.");
+
+    $filters['Leadmon DUL']['prefname'] = 'filters_spam_lm_dul';
+    $filters['Leadmon DUL']['name'] = 'Leadmon.net DUL List';
+    $filters['Leadmon DUL']['link'] = 'http://www.leadmon.net/spamguard/';
+    $filters['Leadmon DUL']['dns'] = 'spamguard.leadmon.net';
+    $filters['Leadmon DUL']['result'] = '127.0.0.2';
+    $filters['Leadmon DUL']['comment'] =
+        _("FREE - Leadmon DUL - Another list of Dial-up or otherwise dynamically assigned IPs.");
+
+    $filters['Leadmon SPAM Source']['prefname'] = 'filters_spam_lm_ss';
+    $filters['Leadmon SPAM Source']['name'] = 'Leadmon.net SPAM Source List';
+    $filters['Leadmon SPAM Source']['link'] = 'http://www.leadmon.net/spamguard/';
+    $filters['Leadmon SPAM Source']['dns'] = 'spamguard.leadmon.net';
+    $filters['Leadmon SPAM Source']['result'] = '127.0.0.3';
+    $filters['Leadmon SPAM Source']['comment'] =
+        _("FREE - Leadmon SPAM Source - List of IPs Leadmon.net has received SPAM directly from.");
+
+    $filters['Leadmon Bulk Mailers']['prefname'] = 'filters_spam_lm_bm';
+    $filters['Leadmon Bulk Mailers']['name'] = 'Leadmon.net Bulk Mailers List';
+    $filters['Leadmon Bulk Mailers']['link'] = 'http://www.leadmon.net/spamguard/';
+    $filters['Leadmon Bulk Mailers']['dns'] = 'spamguard.leadmon.net';
+    $filters['Leadmon Bulk Mailers']['result'] = '127.0.0.4';
+    $filters['Leadmon Bulk Mailers']['comment'] =
+        _("FREE - Leadmon Bulk Mailers - Bulk mailers that do not require confirmed opt-in or that have allowed known spammers to become clients and abuse their services.");
+
+    $filters['Leadmon Open Relays']['prefname'] = 'filters_spam_lm_or';
+    $filters['Leadmon Open Relays']['name'] = 'Leadmon.net Open Relays List';
+    $filters['Leadmon Open Relays']['link'] = 'http://www.leadmon.net/spamguard/';
+    $filters['Leadmon Open Relays']['dns'] = 'spamguard.leadmon.net';
+    $filters['Leadmon Open Relays']['result'] = '127.0.0.5';
+    $filters['Leadmon Open Relays']['comment'] =
+        _("FREE - Leadmon Open Relays - Single Stage Open Relays that are not listed on other active RBLs.");
+
+    $filters['Leadmon Multi-stage']['prefname'] = 'filters_spam_lm_ms';
+    $filters['Leadmon Multi-stage']['name'] = 'Leadmon.net Multi-Stage Relay List';
+    $filters['Leadmon Multi-stage']['link'] = 'http://www.leadmon.net/spamguard/';
+    $filters['Leadmon Multi-stage']['dns'] = 'spamguard.leadmon.net';
+    $filters['Leadmon Multi-stage']['result'] = '127.0.0.6';
+    $filters['Leadmon Multi-stage']['comment'] =
+        _("FREE - Leadmon Multi-stage - Multi-Stage Open Relays that are not listed on other active RBLs and that have sent SPAM to Leadmon.net.");
+
+    $filters['Leadmon SpamBlock']['prefname'] = 'filters_spam_lm_sb';
+    $filters['Leadmon SpamBlock']['name'] = 'Leadmon.net SpamBlock Sites List';
+    $filters['Leadmon SpamBlock']['link'] = 'http://www.leadmon.net/spamguard/';
+    $filters['Leadmon SpamBlock']['dns'] = 'spamguard.leadmon.net';
+    $filters['Leadmon SpamBlock']['result'] = '127.0.0.7';
+    $filters['Leadmon SpamBlock']['comment'] =
+        _("FREE - Leadmon SpamBlock - Sites on this listing have sent Leadmon.net direct SPAM from IPs in netblocks where the entire block has no DNS mappings. It's a list of BLOCKS of IPs being used by people who have SPAMmed Leadmon.net.");
+
+    $filters['NJABL Open Relays']['prefname'] = 'filters_spam_njabl_or';
+    $filters['NJABL Open Relays']['name'] = 'NJABL Open Relay/Direct Spam Source List';
+    $filters['NJABL Open Relays']['link'] = 'http://www.njabl.org/';
+    $filters['NJABL Open Relays']['dns'] = 'dnsbl.njabl.org';
+    $filters['NJABL Open Relays']['result'] = '127.0.0.2';
+    $filters['NJABL Open Relays']['comment'] =
+        _("FREE, for now - Not Just Another Blacklist - Both Open Relays and Direct SPAM Sources.");
+
+    $filters['NJABL DUL']['prefname'] = 'filters_spam_njabl_dul';
+    $filters['NJABL DUL']['name'] = 'NJABL Dial-ups List';
+    $filters['NJABL DUL']['link'] = 'http://www.njabl.org/';
+    $filters['NJABL DUL']['dns'] = 'dnsbl.njabl.org';
+    $filters['NJABL DUL']['result'] = '127.0.0.3';
+    $filters['NJABL DUL']['comment'] =
+        _("FREE, for now - Not Just Another Blacklist - Dial-up IPs.");
+
+    foreach ($filters as $Key => $Value) {
+        $filters[$Key]['enabled'] = getPref($data_dir, $username,
+            $filters[$Key]['prefname']);
+    }
+
+    return $filters;
+}
+
+function remove_filter ($id) {
+    global $data_dir, $username;
+
+    while ($nextFilter = getPref($data_dir, $username, 'filter' .
+        ($id + 1))) {
+        setPref($data_dir, $username, 'filter' . $id, $nextFilter);
+        $id ++;
+    }
+
+    removePref($data_dir, $username, 'filter' . $id);
+}
+
+function filter_swap($id1, $id2) {
+    global $data_dir, $username;
+
+    $FirstFilter = getPref($data_dir, $username, 'filter' . $id1);
+    $SecondFilter = getPref($data_dir, $username, 'filter' . $id2);
+
+    if ($FirstFilter && $SecondFilter) {
+        setPref($data_dir, $username, 'filter' . $id2, $FirstFilter);
+        setPref($data_dir, $username, 'filter' . $id1, $SecondFilter);
+    }
+}
 ?>