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Install a free SMTP spam filter for postfix
Authored by: heavyboots on Jan 13, '05 12:28:29PM

While I haven't done anything more than set up ASSP on a testbed Mac system, I can supply general confirmation it is a great little spam filter and dead easy to set up. We've been running it for over a year on our linux email box (with sendmail instead of postfix as the backend) and it works quite effectively.

One of the most important reasons it is so effective is that the spam is preprocessed out by ASSP before it is passed postfix/sendmail/etc rather than postprocessed out after you have accepted delivery and stored it in your mail queue (the normal case for most spam filters). The same applies to emails with virus-like attachment such as .exe, .pif, etc. By rejecting viruses before getting your mail program involved, you can potentially save a lot of processor power, disk space and bandwidth during a netwide viral outbreak.

Also, Beysian filters work far better with constant training. ASSP scores big here too with one company-wide spam address that anyone can use to send spams that ASSP missed back to the filter to help with training.



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