On 13 Dec 2004, Alexander Prohorenko wrote:
Please don't top-post, and quote properly. Read this:
http://www.exim.org/eximwiki/MailingListEtiquette#head-94bc4cb7ee1d5c3b5c5d6410a89656aaf8b634ed
Thanks.
> What can you advise, except spending hours daily filtering mail from
> SPAM manually?
> Unfortunetly, SpamAssassin doesn't work good enough for me,
Investigate whether there are additional measures you can take.
SpamAssassin on its own is not the best or only way of filtering spam. I
deal with some heavily-spammed accounts and have, with some work, all but
eliminated spam/malware using Exim's powerful features in conjunction with
SpamAssassin and ClamAV.
There are a lot of tips here:
http://slett.net/spam-filtering-for-mx/
Some things in particular you may or may not want to consider if you're
not already doing them:
- block mail from dialups (something I was always reluctant to do, but am
doing more and more these days simply because trojan-spam appears to be
the leading source of spam now.)
- HELO checks of various kinds to pick out obvious spam (see HOWTO above,
although be careful)
- make sure Bayesian learning is enabled and working on SpamAssassin
- consider using "add on" SpamAssassin rulesets - there are many available
and some are very effective at expanding SpamAssassin's scope and ability
to identify spam
- write your own SpamAssassin rules. A few custom local rules tailored to
the spam you are getting can work wonders, and also makes it harder for
spammers to evade filters due to the varying targets.
- eliminate "catch all" addresses
The solution to spam is not to generate more spam.
Tim
