Re: [courier-users] mail queue purge

Mark Constable wrote:
> On Friday 13 October 2006 21:06, Sam Varshavchik wrote:
> > > Would it be reasonable to script up something that could
> > > roll over the messages in the queue and "purge" the most
> > > obvious spam quickly and easily ?
> >
> > That'll work, but you'll have to run the 'courier cancel' command
> > to purge each individual message, or stop Courier before manually
> > removing the three files in the queue directories, per each message.
>
> Thanks for the hint. I'll look into the best way to grep for
> the most obvious signs of a spam message and probably stop
> the esmtpd server for a few minutes while some script runs.
>
> For now, we just bit the bullet and stopped Spamassassin and
> sure enough the mailq is dropping by about 200 msgs per minute
> so in a couple of hours we'll re-engage SA but on an empty queue.
> Many users will have an extra few dozen spams each but they'll
> also have all backed up mail from up to 48 hours ago.
>
> One small thing that was useful was this alias so that we
> didn't have to run the mailq command just to see how many
> msgs are in the queue...
>
> # alias mq
> alias mq='find /var/lib/courier/msgq -type f | wc -l'
>
> BTW can anyone suggest a more efficient spam filter other than
> Spamassassin ?

SpamAssassin is the best spam filter around, but you do have to be
careful of how you use it to prevent problems like you had here.

In general:
- Use spamc/spamd rather than calling spamassassin directly
- Don't run excessivly large add-on rulesets
- Make sure you have enough memory to support the number of spamd
children you specify.

Ask on the SpamAssassin mailling list for more detailed suggestions
for your configuration.

--
Bowie

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