>My iMail server is working flawlessly, and has been working great for more >than 3 years.
that's no excuse > Now, all of a sudden, we can't seem to send mail to any >account on earthlink.net. We can send to anyone else, it's just earthlink >that's bouncing our mail back. The bounce messages give no valuble >information, just "undeliverable to [EMAIL PROTECTED]". I set up a list server for an Imail user in LaLaLand, his customer sent 175k msgs, with 1000's to earth sometthing or other. boom, all their MX's started refusing with "unknown user" but if you telnetted from another ip, sent mail to the unknown user, it was accepted. >Is it possible that Earthlink is doing a reverse DNS lookup on domains that >send email to their server? anything's possible. >I currently do not have proper PTR records that doesn't help, >, as >I only have a small block of IPs, and I'm having problems getting my >provider to delegate authority to my DNS servers (please excuse me if my >teminology is wacked, I'm not a real DNS guy). telnet to the MX from an ip different from your Imail ip to see if they've blacklisted imail's ip. Len http://MenAndMice.com/DNS-training http://BIND8NT.MEIway.com : ISC BIND 8.2.4 for NT4 & W2K http://IMGate.MEIway.com : Build free, hi-perf, anti-abuse mail gateways Please visit http://www.ipswitch.com/support/mailing-lists.html to be removed from this list. An Archive of this list is available at: http://www.mail-archive.com/imail_forum%40list.ipswitch.com/
