RE: looking into spamassassin mail proxy solution

> Subject: RE: looking into spamassassin mail proxy solution
>
>
> Thanks,
> Knowing what to search for helps.
> The first document I started reading has an installation where spam is
> filtered to a specific user 'spammy'. I hope that there is a way to just
> tag the spam in the header and let the user filter locally.
>

Yes, amavisd-new has many configuration options. An easy way to pass the spam is to set kill_level high, for example: $sa_kill_level_deflt = 9999;

Doing so will also prevent quarantining of spam messages.

You would then also set:
$final_spam_destiny = D_PASS;
(or)
$final_spam_destiny = D_DISCARD;

It's important in amavisd-new that @local_domains_maps contains all the domains for which you accept mail.

This may help with basic understanding: http://www200.pair.com/mecham/spam/amavisd-settings.html

It's also worth noting that spam scanning is very resource intensive and requires tuning (which is not covered in most HOWTOs) in order to get maximum throughput. You need to match the horsepower of the server(s) to the amount of mail you receive, or suffer mail queueing up behind amavisd-new, resulting in delayed deliveries and other serious headaches. Many find some relief in greylisting (which can delay mail) and/or policy servers like policyd-weight. Also, some of the HOWTOs are rather dated. Be careful with items such as Postfix RBL checks. Some are now extinct and will cause problems if used. I have seen people recommend zen.spamhaus.org (or alternately sbl-xbl.spamhaus.org), but that's about the extent of it.

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