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Relay on external email

Posted on 2011-10-29
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We wanted to prevent email, both internal and external, from being delivered to a specific user. So, using a test account, we Remove Exchange Attributes in ESM and ran the Clean Up wizard. This meant the mailbox was still there but orphaned. We then sent a test email to this user and on both internal and external senders receive an NDR as expected. Great, just what we want. We then brought the test account back on line by selecting Reconnect in ESM, and chose the account from AD. This process did not generate any errors. To test, we again sent test messages both internally and externally. What we didn't expect was that although the internal emails are delivered successfully, an NDR is returned to any external sender. Basically, this user can no longer receive external email. Any ideas?
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Question by:AHJ2008
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by:LesterClayton
ID: 37049509
Are you certain that the user has received the e-mail addresses for your external domain?  When you add a mailbox to a user, that user will get a new e-mail address based on their alias, or username - and the default domain of your Active Directory Domain.  Did you add the external domain as an additional e-mail to their E-mail Addresses?

Check the properties of the mailbox - then the E-mail Addresses tab.  Ensure the external mail address is in the list of E-mail addresses.
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by:Madan Sharma
ID: 37050372
please post the NDR of external sender. That will be helpful to provide your best support.
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by:AHJ2008
ID: 37055712
Thanks for the quick responses:

LesterClayton: I can confirm that there is an SMTP address for this user with the correct domain name.  What I can't confirm is whether this entry was removed when we took "Remove Exchange Attributes" and recreated at the point we "reconnected" the mail box.  Interestingly though, I added a new smtp address alongside what I would call the original smtp address (or at least the one that worked on this account before we began our test) and emails to the secondary smtp address do get through.  Has the original address somehow become "orphaned"?

akicute555: The following NDR was returned ...

Reporting-MTA: dns;blu0-omc3-s30.blu0.hotmail.com
Received-From-MTA: dns;BLU154-W21
Arrival-Date: Mon, 31 Oct 2011 02:38:20 -0700

Final-Recipient: rfc822;fsatest1@ahj-ltd.co.uk
Action: failed
Status: 5.5.0
Diagnostic-Code: smtp;550 relaying denied

Thanks in advance.
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AHJ2008 earned 0 total points
ID: 37827990
Resolved in my absence.
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by:AHJ2008
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