Mail server hostname greeting warning
Posted on 2009-05-08
I am in the process of setting up exchange 2007 on SBS 2008 server. Brand new setup no migration. I have exchange configured correctly as I can send and receive email with no problems internally and externally. In the exchange 07 you have to manually create send and receive connectors and based on some documentation I read it should be set as remote.domainname.com
Well when i run my dns report I get the following:
WARNING: One or more of your mailservers is claiming to be a host other than what it really is (the SMTP greeting should be a 3-digit code, followed by a space or a dash, then the host name). If your mailserver sends out E-mail using this domain in its EHLO or HELO, your E-mail might get blocked by anti-spam software. This is also a technical violation of RFC821 4.3 (and RFC2821 4.3.1). Note that the hostname given in the SMTP greeting should have an A record pointing back to the same server. Note that this one test may use a cached DNS record.
remote.bowenconsulting.com claims to be non-existent host remote.bowenconsulting.com: <br /> 220 remote.bowenconsulting.com Microsoft ESMTP MAIL Service ready at Fri, 8 May 2009 20:22:00 -0400 <br />
As you see in the last line the names match. The A record is created properly or otherwise it would receive messages right. Any idea what would cause that?
I can send and receive just fine, my only reason in posting this is that in the next couple of weeks, something isn't set right with outgoing mail and the company gets put on a blacklist.
Let me know if anyone has seen this before.