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EXCHANGE 2003 ERRORS AFTER SERVER 2003 UPGRADE FROM SERVER 2000

I just upgraded our server 2000 to 2003. We had exchange 2003 running on the 2000 we upgraded. After the upgrade successfully  completed clients in exchange are not getting emails and the emails that are sent are getting notifiaction messages that they are delayed. Event log in server show xexch50 command 504 error need to authenticate. Any help would be greatly appreciated
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ltbullit
Asked:
ltbullit
2 Solutions
 
Jay_Jay70Commented:
did you run the adprep tools? i may be way off but just want to confirm
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ltbullitAuthor Commented:
Yes adprep had been ran prior to upgrade install
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SembeeCommented:
Don't like in place upgrades myself, they usually cause problems.

Make sure that anonymous authentication is enabled on the SMTP virtual server.
Also look through the event viewer for anything related to the anonymous account having a problem.

Simon.
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