How can i prevent 521-EHLO/HELO from sender error
Posted on 2006-06-07
Ok here is the issue.
We have an older backend exchange (RISERVER01) server with a front end. Recently we added a 2nd backend server to the mix. The mail addresses are the same...we just moved the mailbox because some of the users were in a different location. Again the mail addresses remained the same. The problem is that the users that we moved have gotten a few returns from comcast.
<RISERVER02.rnccnet.com #5.5.0 smtp;521-EHLO/HELO from sender 126.96.36.199 does not map to riserver02.rnccnet.com in DNS>
We only have one public dns entry and it points to the old server RISERVER01. I tried changing FQDN on the new server to match the one on the existing server...but the issue remains. I understand why but what would be the best solution to fix this issue? Can i have our ISP map two DNS entries to mail.servername.com? Only comcast address appear to be having issue with this...but is there a way to fix and have it announce itself as RISERVER01 even though it is RISERVER02? Otherwise the email is working fine...this is the only issue. Any help would be greatly appreciated. I changed the name of the servers but they still illustrate the problem. Is there a setting i can modify in exchange?