So far MIMEDefang/SpamAssassin/Clamd have been working out fairly well on our gateway relay mail server, helping to eliminate spam/viruses before they hit our main mail server where all our domains and user accounts reside. We're an ISP and deal with a volume of around 200,000 email messages per day -- 70-80% of those messages are crap, either containing viruses OR the messages are unsolicited spam. Unfortunately the gateway MIMEDefang filtering server is a bit underpowered (PIII 750Mhz with 1GB RAM); I plan on ordering a dual Xeon system soon to resolve the slowness issue.
I've set up my config to use Bayes (along with DCC and Razor2) -- when the bayes_toks DB grows to certain size (namely above 100MB), I run into major lagging/hangs with MIMEDefang and sendmail processes. Lots of .lock files wind up in the bayes directory and MIMEDefang slaves cannot open/write to the files because of this, delaying mail delivery substantially. I have tried turning off the autolearn feature in sa-mimedefang.cf (this is a system-wide install), that has no effect -- even after rebooting MIMEDefang/Sendmail those Bayes databases are still being modified. Is there any way to continue to use Bayes WITHOUT autolearn enabled? Is there somewhere else that I have to disable autolearn other than in the sa-mimedefang.cf file?? Also, would it be wise for me (with my underpowered server) to enable queuing for MIMEDefang (in /etc/init.d/mimedefang) and adjust the time-out settings (perhaps lowering the time-outs)? Does restricting the memory size of the slave processes pose any problems? Right now each mimedefang.pl slave eats up about 64MB of physical memory (RSS), so it doesn't take long for my system to eat up the entire 1GB of RAM -- currently I have not imposed any memory restrictions. If any of you can point me to (or send me) a recommended config file that would run well on my system, I'd highly appreciate it. I've enabled BIND on this system so that the network checks run faster, I've also adjusted the hell out of my sendmail settings (lowering all time-outs). I only allow 30 sendmail processes on this system and have set mimedefang up to run 7 slaves minimum, 12 maximum. Thanks in advance for any tips. - Chris _______________________________________________ Visit http://www.mimedefang.org and http://www.canit.ca MIMEDefang mailing list [EMAIL PROTECTED] http://lists.roaringpenguin.com/mailman/listinfo/mimedefang
