On 05/21/2013 11:32 PM, Gabriel Gunderson wrote: > It's been a while I've admin-ed an SMTP server. I'm wondering what the > state of the art is in SPAM filtering. Back in the day, it was all > about Spam Assassin. > > Any tips to get me looking in the right direction? BTW, I'm willing > to do this one right, it could potentially become a pretty big > installation. Also, using a hosted offering is not in the cards.
I haven't managed an SMTP server in a couple of years now at BYU I used a combination of connection greylisting, dspam, and spamassassin. Still found that it was a losing battle. Of everything I did, greylisting seemed to have the most immediate effect and the most long-term effect. Though crafting an SMTP server whitelist to prevent unnecessary delays in legitimate mail took time. Dspam only worked if the users were willing to spent time to train it. I never could approach the level of Google's Gmail spam filter. /* PLUG: http://plug.org, #utah on irc.freenode.net Unsubscribe: http://plug.org/mailman/options/plug Don't fear the penguin. */
