I've got serveral users who receive email rejections on outbound email to external domains with the general error 500 "Firewall Error"
The problem I believe lies within the "Generating Server" being my internal local domain instead of our public domain.
Below is the actual email rejection error:
dc1prppa2.ga.adp.com gave this error:
A problem occurred during the delivery of this message to this e-mail address. Try sending this message again. If the problem continues, please contact your helpdesk.
Diagnostic information for administrators:
Generating server: Atlas.sos.local
dc1prppa2.ga.adp.com #500 Firewall Error ##
Original message headers:
Received: from Atlas.sos.local ([fe80::c04a:579f:6c19:1bec]) by
Atlas.sos.local ([fe80::c04a:579f:6c19:1bec%11]) with mapi; Thu, 14 Apr 2011
My servername is Atlas and internal domain is sos.local thus the atlas.sos.local as the generating server.... since that can't be found via reverse dns it's failing SPAM protection on target clients I'm sure.
My problem is, I'm unable to determine where the heck the local servername and domain is being generated from.
The following is my configuration info:
Exchange 2010 SP1
Server 2008 R2
Send Connector Type Internet, FQDN mail.sosrad.com, address space is *, using (DNS) MX records to route mail, source server is sos.local/configuration/si
te-name (which I suspect is configured incorrectely)
om outbound smtp passes properly, so the MX records for sosrad.com are configured properly and complete reverse DNS just fine.