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Email non-delivery in exchange 2003

Having a problem with mail delivery for one user.  We are using SBS 2003 &  Ex2003 and have had to continue our use of an external POP3 provider.  Mail directed to an internal  user that does not have an account on our SBS /  exchange system (me@MyDomain.com) BUT does have an account on the POP3 provider system  (me@MyDomain.com) is not being delivered to the POP3 provider.  We instead get an NDR report.  

I cannot change his email address (me@MyDomain.com).  A contact record results in a server bounce. I am unable to deploy OWA in the short term.

How can I get the mail originating internally for this individual to be delivered to the POP3 system?
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sfsrm
Asked:
sfsrm
1 Solution
 
tigermattCommented:

You need to split your SMTP namespace. Have all mail delivered to Exchange, but tell Exchange what to do when it gets a message addressed to a contact it doesn't know about. This essentially means entering the name (or IP) of the POP3 host's server.

Take a look at http://www.msexchange.org/tutorials/Exchange-2003-SMTP-Namespace-Sharing.html.

-Matt
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sfsrmAuthor Commented:
The solution proposed is exactly correct for my situation.  Many Thanks!
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