[Mailman-Users] Spikes in mailman queue

Mark Sapiro mark at msapiro.net
Fri Apr 4 05:36:03 CEST 2008

Fletcher Cocquyt wrote:
> In the last 3-4 weeks I have observed 4-5 occasions were the mailman
> qfiles/in dir suddenly gets bottlenecked (by mostly spam) ­ seemingly
> waiting on spamassassin.
> I look at the syslog and it shows its processing 1 email every 10-20 seconds
> ­ I¹ve done some tuning already (local DNS caching server, Razor timeouts
> lowered etc) - can anyone offer some advice on how to prevent this?  The
> workaround currently is to stop/start SA (but then all the spam ends up in
> the moderator's queue) - thanks for any tips

I assume you actually are invoking SA from Mailman. If you could do this 
earlier, either in the MTA or maybe in procmail between the MTA and 
Mailman, multiple messages can be processed in parallel.

Or, you could consider slicing Mailman's in queue to get more 
parallelism at that level.

Beyond that, I suggest you try a SpamAssassin list for SA tuning questions.

Mark Sapiro <mark at msapiro.net>        The highway is for gamblers,
San Francisco Bay Area, California    better use your sense - B. Dylan

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