Exchange 2007 tries to relay message to a POP3 server
I getting the following delivery error below when sending to an outside domain. My 2007 Exchange server sends messages destined for a particular domain to a POP3 server setup in my network domain. The POP3 server is rejecting the messages because of security policies. I think something in the migration from Exchange 2000 is causing this issue. How can I stop 2007 from sending messages destined for this particular domain to the POP3 server? I don't know why the POP3 server was setup but we don't need it.
Delivery has failed to these recipients or distribution lists:
devin@somedomain.com
Your message wasn't delivered because of security policies. Microsoft Exchange will not try to redeliver this message for you. Please provide the following diagnostic text to your system administrator.
The following organization rejected your message: mobile.mydomain.com.
_____
Sent by Microsoft Exchange Server 2007
Delivery has failed to these recipients or distribution lists:
devin@somedomain.com
Your message wasn't delivered because of security policies. Microsoft Exchange will not try to redeliver this message for you. Please provide the following diagnostic text to your system administrator.
The following organization rejected your message: mobile.mydomain.com.
_____
Sent by Microsoft Exchange Server 2007
ASKER
There is not a Send Connector with the address space of that domain. The old Exchange 2000 server has been decommissioned. Is there anywhere else I can stop this from occuring?
ASKER
My exchange 2007 server still insists on relaying messages destined to a specific user outside of my domain to a POP3 server on my network. The specific user appears to have a email account on the POP3 server but he is not listed. If I try to add a mailbox to the POP3 server for the user; systems says it already exists. I can find no contacts or entries in AD referring to the user. We need to be able to send email to the specified user without it being relayed to the POP3 server first. Can anyone help?
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ASKER
Turned out it was a DNS issue. There was a forward lookup zone for the domain. Apparently, at some time we were hosting their mailboxes on a POP3 server. Removed the zone.
If there is any Send connector found with the address space of that domain, then you may either remove that connector or simply disable it.
If you have Exchange 2000 server still in existance, then you would need to check this from Exchange System Manager: Administrative Groups: Routing groups > Connectors.