At 12:13 PM 2/17/98 -0500, Fisher Mark wrote:
I am curious -- does anyone have any statistics on how much spam (what percentage) is done via SMTP relay? To me, using the SMTP service of someone/something you don't know to send 1000's/10,000's/more of email messages seems pretty unfriendly at best.
Yes, it's one of the major techniques used by spammers; the other big one is disposable accounts. maps.vix.com has information about the Realtime Blackhole List system, which lets you configure your sendmail system to reject incoming mail from any system that permits relays, and provides lots of information about setting your system not to do relays. They're a bit inflexible, but if you're up to rolling your own sendmail.cf code, you can fix that. Thanks! Bill Bill Stewart, bill.stewart@pobox.com PGP Fingerprint D454 E202 CBC8 40BF 3C85 B884 0ABE 4639