On Mon, 16 Aug 2004 [EMAIL PROTECTED] wrote: > The theory goes that if bad.example.com goes to 127.0.0.1, then your > test of RCPT TO: [EMAIL PROTECTED] will be against localhost - and > localhost should certainly deny this as it would be an open relay > otherwise.
The theory is good, but the practice is bad. If you connect on the loopback address, 99.99% of Sendmail installations will permit relaying. The remaining 0.01% are broken. :-) Regards, David. _______________________________________________ Visit http://www.mimedefang.org and http://www.canit.ca MIMEDefang mailing list [EMAIL PROTECTED] http://lists.roaringpenguin.com/mailman/listinfo/mimedefang
