Patch 139 introduces a header size limit for Symantec[tm] Brightmail
AntiSpam 6.0.1.

      12633
      Component: regex module
      Synopsis:  Scanning message takes abnormally long time for message 
                 with 45000 headers 
      Platforms: all (only if using non-Sendmail or Postfix MTA)

Sendmail and Postfix impose header length limits on incoming messages. 
Other MTAs have no limit restrictions on message header length. Formerly, 
for installations using an MTA other than Sendmail or Postfix, scanning
messages with exceedingly large headers could take 15 or more seconds per 
message to process.  If a large number of messages were received with such 
abnormally long headers, the longer processing time could cause mail to 
back up onto the MTA.  

This fix introduces a header limit of 32k bytes, which is the same as the
built-in limit imposed by Sendmail. libregex will return a "spam" disposition 
for any message with headers exceeding this limit, and each occurrence will 
be logged at the NOTICE level.  


Installation Instructions (UNIX):

1. cd to the LOADPOINT. To find the LOADPOINT for the Brightmail
   Scanner on UNIX, execute this command:
        % grep product /var/.com.zerog.registry.xml | grep Brightmail
   The LOADPOINT is the directory value for "location=".
2. Copy the patch file (to the LOADPOINT).
3. Stop the Brightmail Scanner:
        # /etc/init.d/mailwall stop
4. As the root user, call patchinstall:
        # etc/patchinstall <patchfile>
5. Restart the Brightmail Scanner:
        # /etc/init.d/mailwall start


Installation Instructions (Windows):

1.  Find the LOADPOINT.  Its location is given in the registry key
    HKEY_LOCAL_MACHINE\Software\Brightmail\Loadpoint .
2.  Copy the zip file to the LOADPOINT.
3.  Stop the Brightmail Server using the Control Center.
4.  Extract the zip file into the LOADPOINT, preserving the folder structure 
    from the zip file.
5.  Start the Brightmail Server using the Control Center.