>  We are an isp that currently runs through either qmail-scanner or Plesk 
>  spamassassin. 2.6x and i believe 3.x. We are having issues with spamd 
>  getting into the 125+mb process size at 4 to 5 processes. We are running 
>  from Fedora to FreeBSD 4.9+ and qmail is the MTA. I have looked and have 
>  not been able to find a way to limit scanning to to messages <1mb. Any 
>  help would be greatly appreciated.

Investigate the --max-conn-per-child and --max-children command line flags 
for spamd. While not directly addressing the issue of SA processes expanding 
to consume all available memory, --max-conn-per-child will at least kill and 
restart a child after x number of messages, which definitely does the trick 
for me. I have --max-conn-per-child set to 10, and --max-children set to 5. 
SA only processes about 600 messages per day, but with a full complement of 
SARE rules, it keeps the SA processes down to a trim 40-60MB per process.

Mike Jackson
Tech Administrator, Datahost
www.datahost.com