Howdy all. My current installation involves calling SA from MIMEDefang which in turn is called from Sendmail. Enough background info.
I'm currently calling spamassassin from a procmail recipe on a spamtrap account. The recipe does various bits of munging including sed calls to strip sensitive spamtrap info as well as calling spamassassin -d. The recipe also reports spam via 'pyzor report', reports spam via 'spammassassin -r.' Finally after all the various munging and reporting is done it forwards a copy to Bob the NANAS Bot and to the FTC.
I'm seeing an enormous amount of CPU time being spent on the two spamassassin calls (-d and -r) whenever I get hit with a large spam run (say for example right this very second). The CPU load hits 15 quickly and frequently reaches far higher than that. I'm forcing Sendmail to queue at 15 and temp fail at something higher that I can't recall off the top of my head.
Is there a less expensive way to strip the SA report and message changes from messages? I thought about writing the SA report munging up in Sed but never implemented it. If someone wants to see my procmailrc I'd be glad to send them the sanitized version. The only problem with it at present is bounces. I haven't been able to figure out how to filter out incoming bounces so that they aren't forwarded on. FROM_DAEMON and FROM_MAILER just don't seem to be working.
If you're using procmail anyway, why not use FormMail to strip SpamAssassin headers ? Apart from the Subject if you have subject rewriting enabled, SpamAssasin doesn't change any headers, it just adds specific new headers. I'd bet anything that FormMail would be lower overhead at stripping headers than SpamAssassin's markup removing mode. (C vs Perl)
That only leaves the header change to figure out....(perhaps sed, or you could use procmails $MATCH builtin to extract the subject minus the spamassassin change, and use the same invocation of formmail thats stripping other headers to "replace" the Subject header with the new one...
Regards, Simon
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