Ivan Krstic (krstic@fas.harvard.edu) [050604 21:06]:
David Gerard wrote:
How's the antivirus filtering on mail.wikimedia.org? The less obviously dispensible crap in the mailing list queue, the closer it will be to humanly manageable ...
I strongly recommend taking a look at greylisting: http://projects.puremagic.com/greylisting/ I've run it on two high-volume production mail servers for a few months now without a single legitimate message getting hard-bounced, and the spam volume has dropped tremendously. Adding one or two good, trusted RBLs (say, SBL-XBL) might also be worth considering. Greylisting is trivial to set up with Postfix, by the way.
If something like that works well enough we might even be able to just let unsubscribed messages through :-D Although I understand there are now spam engines that retry failed messages ...
- d.