Vladimir Kozlov wrote:
Hello,
As most of you, I'm in a permament battle with spammers. But, unfortunately, all actions (including chkuser, rbl, spamassassin) are not enough to win. Now I'm seriously thinking about greylisting patch, so could you please share your thoughts regarding it. Maybe somebody already use this patch?
These are worth a read:
http://matt.simerson.net/cgi-bin/ezmlm.cgi/3/7576
http://matt.simerson.net/cgi-bin/ezmlm.cgi/3/7587
Regards,
Bill
Oh, and one more note.. I've found that machines that run backup mx (and likely can't do user_exists type checks at the smtp level), get hit particularly hard by spam to bogus addresses, ending with bounces that can't be processed. This is a really good place to run greylisting. If someone is going to target a backup mx when the primary is available, chances are, it's illegitimate mail.
Regards,
Bill
