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Duplicate Email Addresses in Active Directory/Exchange 2003

Posted on 2004-09-21
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Last Modified: 2008-01-16
Hello,

I have two question which are related but are both very important:-
I have an urgent question regarding duplicate email addresses within Active Directory.

Question 1:-
Recently I imported x amount of users into AD using the CSVDE import inclusing email addreses.

However from doing this import  I am encountering a lot of errors like the one below:-

Your message did not reach some or all of the intended recipients.
The following recipient(s) could not be reached:

      Letsie Tilley on 21/09/2004 16:28
            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.
            <Exchange.ad.xbas.nhs.uk #5.1.1>


These erros are generated on reply to an email.  I believe this is to do with duplicate addresses.  Can I confirm this error is for duplicate addresses??

Question 2:-
I can delete the duplicate address when I know who are the recipents are, however how can I search for the duplicates in AD across users and contacts?  Do I need a software package to do this for me?

We are using Exchange 2003 and Active Directory 2003.

If so what might it be called?

This is matter of urgency, this is happening for my whole site.

Can someone please help me.
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Question by:AJAY_MASSON
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8 Comments
 
LVL 24

Expert Comment

by:David Wilhoit
ID: 12113964
Is this SMTP address you imported, on the recipient policy? If so, did you update and rebuild the RP?>

D
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Author Comment

by:AJAY_MASSON
ID: 12114183
No, I did not rebuild the Address List.

I just ran the import.
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LVL 24

Expert Comment

by:David Wilhoit
ID: 12115129
Do an update/rebuild of the Recipient Update Service. Secondly, open a user object, go to the email addresses tab, and see what entries are present.

D
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Author Comment

by:AJAY_MASSON
ID: 12116373
I have alread run update of the Recipent Policy however I will run Rebuild now.  I know the rebuild will take time though.  

Under the email addresses tab, the entrie that is there is only SMTP.  The SMTP Address for the user or contact.

Is there anything wrong with this?


Ajay
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LVL 24

Accepted Solution

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David Wilhoit earned 1500 total points
ID: 12122772
yea, no X.400 address for these users. Without it, it won't work. X.400 has to be there.
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Author Comment

by:AJAY_MASSON
ID: 12131269
Why do I need the X.400 for these users??  I believe the company does not use X.400 anymore.

If I add X.400 for these users will this stop the NDR's on replying to an email.

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LVL 24

Expert Comment

by:David Wilhoit
ID: 12190757
Was it the X.400 address?
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Expert Comment

by:gorhamoien
ID: 12376732
I have teh same issue with certain mailboxes in Excahnge 2003. I get that the user email does not exist when it does. I also see a user which is not on the exchange server but shows up in the global address book. Will rebuild on the recipient polisy will clear this issue?
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