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New Users Can Not Receive External Messages

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New Users Can Not Receive External Messages - 10.Feb.2014 4:37:44 PM   
vinhdam

 

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Joined: 10.Feb.2014
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Hi everyone,

I have a problem with our email server. Recently, all newly created users or distribution groups can not receive any external email. Messages sent to them will be bounced back with the following error message:

550 5.1.1 <first.last@domain.com>... No such user

There are quite a few threads relating to this issue but none of them offer much help to my situation.

If you have any idea, please give me some help.

Here are some information:

- Exchange Server 2007
- No problem with current users or groups
- Only occur with newly created users or groups
- Only occur with external senders. Internal senders are okay
- (Another application that pulls Active Directory entries from our domain controller can't see the new users or groups either)

Many thanks for your help!

Vinh Dam
Post #: 1

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