Antispam solutions

[jtk at titania.net (Joseph T. Klein)]

Having bogon filters can weed out a bunch of spam before it hits your
mail servers.

http://www.cymru.com/Bogons/

Using Cyrus with sieve is one way to give users control.

http://www.cyrusoft.com/sieve/

You can have spam assassin add headers and filter on the header values.

http://directory.fsf.org/SpamAssassin.html

All of the above is free.
--
Joseph T. Klein

PSTN: +1 414 961 1690 VoIP: +1 414 431 4231 Mobile: +1 414 628 3380

On Apr 5, 2005, at 11:00 AM, Phillip Salzman wrote:

> Hello,
>
> I've been researching several different vendors for antispam over the 
> last
> few weeks.  It seems many of the major commercial players (Brightmail,
> Sophos) charge per-user rates that make it difficult to the bottom 
> line.
>
> One of the goals is to prevent the mail from actually hitting our 
> backend
> Qmail systems, but at the same time give users the ability to weed 
> through
> their messages in a quarantine.  Initially we wanted to deploy Spam 
> Assassin
> but haven't found any quarantine method available.
>
> So - my question is what some of you were using for ISP-based 
> antispam, and
> do you know of a user-manageable quarantine for SA?  We have roughly 
> 90k
> users and 11k domains.
>
> Thanks for any input or critiques you may have...
>
>
> --
> Phillip Salzman
> http://www.sysctl.net/phill/
>
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