Tweaking the anti-spam setup

1. Had to tweak the SA ruleset for LogWatch, specifically:
   

   header TONNS_LOGWATCH  Subject =~ /^LogWatch for /
   score  TONNS_LOGWATCH  -20.0

   Eventually, it should be a real whitelist entry, but since this is a dry-run, I'll just leave it at this.
   
   
2. The LogWatch amavisd script is out-of-sync with the logs that amavisd generates. This fixed things:
   

   # pwd
   /etc/log.d/scripts
   # diff -u services.orig/amavis services/amavis 
   --- services.orig/amavis        2005-08-22 21:16:47.000000000 -0400
   +++ services/amavis     2006-11-10 11:01:50.000000000 -0500
   @@ -60,7 +60,7 @@
            or ($ThisLine =~ /^cached [a-zA-Z0-9]+ /)
            or ($ThisLine =~ /^starting.  amavisd at/) ) {
           # We don't care about these
   -   } elsif ($ThisLine =~ /^Passed, /) {
   +   } elsif ($ThisLine =~ /^Passed CLEAN, /) {
          $CleanMsgs++;
       } elsif (($FileName, $From) = ( $ThisLine =~ /^BANNED name\/type \(([^\)]+)\)\, \<([^\>]*)\>/ )) {
    
   @@ -82,7 +82,18 @@
            $Viruses{$Virus}{$From}++;
          }; # if
    
   -   } elsif (($Fromspam, $Towards) = ( $ThisLine =~ /^SPAM, [\(\<]([^\>\)]+)[\)\>] -\> [\(\<]([^\>\)]+)[\)\>]/ )) {
   +   } elsif (($Fromspam, $Towards) = ( $ThisLine =~ /^Passed SPAM, \[[\d\.]+\] \[[\d\.]+\] [\(\<]([^\>\)]+)[\)\>] -\> [\(\<]([^\>\)]+)[\)\>]/ )) {
   +      $SpamMsgs++;
   +
   +      if ($Detail >= 5) {
   +        $Spamtypes{$Towards}++;
   +      }; # if
   +
   +      if ($Detail >= 10) {
   +        $Spams{$Towards}{$Fromspam}++;
   +      }; # if
   +
   +   } elsif (($Fromspam, $Towards) = ( $ThisLine =~ /^Passed SPAM, [\(\<]([^\>\)]+)[\)\>] -\> [\(\<]([^\>\)]+)[\)\>]/ )) {
          $SpamMsgs++;
    
          if ($Detail >= 5) {