Usually the problem is that people don't have a reverse entry at all. The fact that you have one, should be okay. Yes, it would be nice to match the reverse with the forward, but there is no such RFC or rule that I know of that states that this is necessary. I would say more than likely that this ISP is a little overzealous. If they reject mail where the reveres name does not match the forward, they must reject A LOT of mail.
Travis -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] Behalf Of Paul Navarre Sent: Tuesday, January 13, 2004 10:24 AM To: [EMAIL PROTECTED] Subject: [IMail Forum] Reverse DNS Question A client of mine told me that he couldn't send email to a particular address. The intended recipient's ISP is blocking the message. After contacting the ISP in question, they sent me the following reply: > The reverse DNS entry on the server's IP should match one of > the server's forward DNS names, for example > "mail.netinteraction.com" or "mx1.netinteraction.com", so > that it can be easily recognized by other sites as a > legitimate mail server. Right now, the reverse entry is > "208-151-247-226.netinteraction.com", which is not very helpful. The host name for the Imail server is netinteraction.com, so my understanding is that this my reverse DNS is "by the book". I have two questions. The first question is how should I respond to these folks? Is there any merit whatsoever in what they are saying? Does anyone have a reference that I can point them to that clearly states why this is incorrect? The 2nd question is even if these guys are not respecting valid configurations, is there a "best practice" that would make my life easier when it comes to overzealous ISPs? Paul Navarre 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.ipswitch.com/support/IMail/ 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.ipswitch.com/support/IMail/
