(postfix) SPAM filter?

Rudy crapsh at monkeybrains.net
Wed Dec 12 22:47:49 PST 2007

Steve Bertrand wrote:
>>> * Once it is setup then it would require no additional maintenance.
>>> * Potential spam messages are marked with a special header that can be
>>> filtered on user discretion on their local mail client software.
>> Yes, one recommendation for sure. Give up on your first goal. It'll
>> never happen, because fighting spam is an arms race, with new tactics
>> needing to be adopted.
> Amen (or Ahem, or what BSDie would say). There will *ALWAYS* be
> maintenance. If you are not developing new regexs and/or solutions to
> fight the daily produced techniques that make up SPAM, then you are
> implementing them.

I have found spam assassin with nightly updates of the helpful (there are other people developing 
new regexs daily).

48 5 * * * /usr/local/bin/sa-update  --channel updates.spamassassin.org && 
/usr/local/etc/rc.d/sa-spamd restart

There are other channels you can subscribe to.

Another super helpful bocker is to block all inbound connections from IPs without reverse DNS. 
Don't forget to virus check your email while you are at it -- there are several packages (clamav is 
one).  And finally, a couple of RBLs added into the mix are helpful.


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