Exchange delivering email but not arriving in outlook

Message Tracking on the Exchange server shows message is received from external source and then delivered to internal client but it is not being received by the user's Outlook.

It is only happening from one specific address.  All other messages are fine but when it comes from this address the mail is delivered but not received.

The address contains our domain in it.  e.g if our domain was company, the address is Not sure if that could be part of the problem?

There is no rules set up on local clients outlooks and no transport rules configured on the exchange server.

Any ideas?
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Are you able to see them email using OWA? Also check the junk folder in Outlook.
question01Author Commented:
Not in junk folder.

Can't see the email in OWA or on Blackberry's
Check Junk Mail settings in outlook to make sure it is not configured to permanently delete suspect mail.  i've been burned by that before.

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question01Author Commented:
Vmax, I just figured that out then came back and saw your comment. Is exactly what was happening.
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