On 05/14/2013 12:43 PM, Christopher Adams wrote: > On another note, what are thoughts about utilizing SpamAssasin or other > spam software with Postfix and Mailman. It seems that a lot of the traffic > that is going through the Mailman server is spam, quite a bit which is > flagged and blocked by using RBLS in postfix smptd_recipient_restrictions. > I am seeing upwards to 8,000 messages blocked every day. Is there a more > efficient way to manage this without making it a full time job? :>)
I don't think I ever replied to this, but spam filtering is the server's job. It should be done at the 'front door' and mail determined to be spam should be rejected by the incoming MTA. This avoids the issue of accepting the mail and later determining that it is unacceptable and perhaps returning a DSN or responding in some other way to an innocent 3rd party's spoofed address. SpamAssassin alone is not a total solution, but there are milters for incorporating SpamAssassin as well as ClamAV scanning into Postfix. There are also techniques like greylisting which can help in some environments. There are also multidimensional solutions such as MailScanner that incorporate spam and virus scanning with many other tests, but one issue with MailScanner is it doesn't evaluate the mail until after it is accepted by the MTA -- Mark Sapiro <m...@msapiro.net> The highway is for gamblers, San Francisco Bay Area, California better use your sense - B. Dylan ------------------------------------------------------ Mailman-Users mailing list Mailman-Users@python.org http://mail.python.org/mailman/listinfo/mailman-users Mailman FAQ: http://wiki.list.org/x/AgA3 Security Policy: http://wiki.list.org/x/QIA9 Searchable Archives: http://www.mail-archive.com/mailman-users%40python.org/ Unsubscribe: http://mail.python.org/mailman/options/mailman-users/archive%40jab.org
