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Date: Thu, 13 May 2004 23:48:31 +0200 (CEST)
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Subject: Re: How do fix a good solution against spam..
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> Heya folks
>
> First of all, sorry if this isn't the correct list, but yet, I think spam
> is a kind of network attack and should be treated as a security issue..
> I run a working mail server using Postfix, MySQL, Courier-IMAP,
>SpamAssassin and ClamAV (amavisd-new)
...
> Regards,
> Jesper Wallin
> _______________________________________________
> freebsd-security@freebsd.org mailing list
> http://lists.freebsd.org/mailman/listinfo/freebsd-security
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> "freebsd-security-unsubscribe@freebsd.org"
>

I'm trying to solve the spam problem on my email server too.

I'm glad to share my and your ideas on the topic.

At the moment I can suggest the following:

 1) use Realtime Black List (see http://spamhaus.org for example);
 2) use Sender Policy Framework (see http://spf.pobox.com);
 3) accept email only after the sender had confirmed your reply;
 4) use spamassasin;

N.B.: only 1,2 save your bandwidth as the SMTP transaction is blocked if
necessary;

Any comments are welcome,
Regards,
Roberto