Postfix and SBL+XBL
I’ve been pretty lazy about putting in spam countermeasures. My email address, which has been around since ‘97 or so, manages to get almost 1000 pieces of spam a day. Thunderbird can not keep up. So I finally got around to learning what it would take to teach postfix to use the SBL+XBL blacklists that Darrell recently mentioned. All it took was adding a trivial restriction to clients that try to connect — reject_rbl_client sbl-xbl.spamhaus.org in the config file. It’s already hard at work:
554 Service unavailable; Client host [211.195.53.91] blocked using sbl-xbl.spamhaus.org;
I can’t believe I didn’t do this sooner. Also, Happy New Year!
Nic wrote:
thanks for the -xbl part — I’ve been using the regular sbl list and now with -xbl I’m blocking more spam…not that it really concerned you, but my thanks nonetheless.
Posted on 03-Jan-06 at 7:45 pm | Permalink
Josh Rodman wrote:
I’m certainly no expert on spamtools, but you might consider reading the acme.com owner’s (thttpd guy) writings on the topic. He’s been using these autofiltering tools for a long time now so I tend to suspect his advice is pretty well tempered.
Pointedly, he feels blacklists will bite you in the butt sooner or later. Food for thought.
http://www.acme.com/mail_filtering/
http://www.acme.com/mail_filtering/shame_frameset.html
Posted on 08-Jan-06 at 4:44 pm | Permalink