Re: [IMail Forum] AOL - Reverse DNS Rejections

[Jeffery Rehm]

By the way, when I check bullhorn.com through dnsreport.com, there are no valid reverse lookups.  This might have already been stated (don't have the time to look at old messages much).   ----- Original Message ----- From: Chase Seibert To: [EMAIL PROTECTED] Sent: Monday, April 19, 2004 21:00 Subject: RE: [IMail Forum] AOL - Reverse DNS Rejections So are you saying that the RDNS results at dnsstuff for bullhorn.com don't matter? They do indeed generate a failure, but I'm unclear as to whether this is a test an actual mail server would use.   All our mail comes from outbound3.bullhorn.com, but this is not a registered mail server for bullhorn.com. This is because we have seperate incomming and outgoing mail servers. Would AOL look at our connecting mailserver (outbound3.bullhorn.com) and do an MX lookup for bullhorn.com?   If so, outbound3.bullhorn.com would not be one of the servers that came back. Is this what they mean by a RDNS failure?   Is it ok to have seperate incomming and outgoing email servers in general?      -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   -----Original Message----- From:R. Scott Perry [EMAIL PROTECTED] To: "[EMAIL PROTECTED]" <[EMAIL PROTECTED]>; Sent: Apr 19, 2004 06:44:59 PM Subject: Re: [IMail Forum] AOL - Reverse DNS Rejections >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. This isn't an RDNS issue: >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. AOL is telling you that your IP has been identified as a source of spam. That's the problem. >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 Those are just the tail end of the standard disclaim that AOL servers report in their SMTP greeting. If you read the complete thing, it says stuff about how they may block E-mail from IPs with no reverse DNS In this case, it is just misleading, as it is not the cause of the problem. -Scott --- Declude JunkMail: The advanced anti-spam solution for IMail mailservers since 2000. Declude Virus: Ultra reliable virus detection and the leader in mailserver vulnerability detection. Find out what you've been missing: Ask for a free 30-day evaluation. --- [This E-mail was scanned for viruses by Declude Virus (http://www.declude.com)] To Unsubscribe: http://www.ipswitch.com/support/mailing-lists.html List Archive: http://www.mail-archive.com/imail_forum%40list.ipswitch.com/ Knowledge Base/FAQ: http://www.ipswitchcom/support/IMail/