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an NDR that shouldn't be occurring

Hello Folks!

I have an Exchange 2003 server. One of my users has suddenly been generating NDRs when other people inside the network try emailing him. It is not always consistent, but it is happening somewhat frequently. The NDR is "The e-mail account does not exist at the organization this message was sent to.  Check the e-mail address, or contact the recipient directly to find out the correct address." Now he is receiving these mails, but the senders are getting this NDR sometimes anyway. This happens for people both inside and outside our domain. Does anyone have any hints as to handling it?
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mrosier
Asked:
mrosier
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1 Solution
 
RobinHumanCommented:
It's possible that the user had send-as or forwarding permissions on a mailbox that no longer exists, and the permission has become orphaned and is causing these errors;
see if this helps:  http://support.microsoft.com/kb/312433
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mrosierAuthor Commented:
I appreciate the help Robin! But this user has never been a delegate or had any delegates. Another person that is support for my end suggested simply clearing the auto-complete cache on Outlook for the user and manually re-entering their address by hand and sending them an email to refresh the auto-complete information for them. We will see if that works.
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RobinHumanCommented:
No problem;
if that doesn't work, exmerge the mailbox contents, delete the mail account, re-create it (after updating AD) and then exmerge the contents back into the new mailbox - that should reset everything
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mrosierAuthor Commented:
is it a good idea to do that from the server or to just put everything into a .PST file on the machine and then just import it back into the mailbox once re-created?
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RobinHumanCommented:
exmerge is a plug-in that you can install on the server, and that creates a pst of the whole mailbox - when you run it, you can specify where you want to save the pst file (we have a separate share on the server for these) - this makes it easier when you are importing it back in
http://www.microsoft.com/downloads/en/details.aspx?FamilyId=429163EC-DCDF-47DC-96DA-1C12D67327D5&displaylang=en
http://www.msexchange.org/tutorials/ExMerge-Recover-Mailbox.html
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mrosierAuthor Commented:
Well I tried recreating the mailbox but still had the same NDR result. It turned out to be a simpler fix though in the end. I was advised to make sure the users cleared their autocomplete cache when typing recipients into the To: box and pulling the user directly from the GAL list thereby refreshing the autocomplete cache for that user. I had them do this and have not heard a complaint since which was about a week ago. Thanks for all the suggestions though!
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mrosierAuthor Commented:
I got this idea from my network vendor
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