I am going nuts trying to figure out this RDNS issue with AOL. They are routinely blocking our mail because they say we don't have a reverse DNS entry for our mail server. I think we do.
I sent a message out from our system which was then relayed back to us. It looks like our IP address is 209.202.131.98. Here is the relavant header tidbit: Received: from outbound3.bullhorn.com [209.202.131.98] by chekov.myinternetwebhost.com with ESMTP (SMTPD32-7.15) id A8BA27B0154; Mon, 19 Apr 2004 14:46:34 -0700 So, I assume AOL wants to see a reverse DNS entry for 209.202.131.98 pointing back to outbound3.bullhorn.com. According to: http://remote.12dt.com/rns/, there is! The error AOL comes back with is: Diagnostic-Code: smtp;554-: (RLY:BD) http://postmaster.aol.com/guidelines/bulk_email.html The mail server you are using to send mail to AOL has been identified as a source of spam. If you believe this message is in error, please have your mail administrator contact AOL at 888-212-5537. 554 TRANSACTION FAILED no reverse-DNS (PTR record) assigned. which 220 have no reverse-DNS (PTR record) assigned. ions from IP addresses which 220 have no reverse-DNS (PTR record) assigned. What am I missing? -Chase Network and Systems Engineer Bullhorn, Inc. 125 B St. Boston, MA 02127 p. 617.464.2440 ex 119 m. 617.512.0326 www.bullhornstaffing.com
