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Monday, January 24, 2011

5.4.6 Hop count exceeded - possible mail loop - Forest Migration

After you perform a cross forest mailbox move, the user is able to send emails, but cannot receive. You receive the following NDR.

Delivery has failed to these recipients or groups:
Bob Smith (
A problem occurred during the delivery of this message. Please try to resend the message later. If the problem continues, contact your helpdesk.
The following organization rejected your message:

Diagnostic information for administrators:
Generating server: exchangeserver.corp.dom
bsmith@company #554 5.4.6 Hop count exceeded - possible mail loop ##

Resolution: Disable the mailbox and reconnect.

James Chong
Security+, Project+, ITIL


Anonymous maxidus sex shop said...

Goodness, there's so much effective information here!

4:12 AM  
Blogger IT Juggler said...

Thanks for the tip. It helped point me in the right direction. No need to disable/reconnect every mailbox, however. Just delete the targetAddress attribute and mail begins to flow.

6:15 AM  
Anonymous Gieljam said...

Thanks IT Juggler, the targetaddress attribute in the AD for the users was indeed the problem.

12:16 AM  
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7:24 PM  

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xml:lang="en" lang="en"> MS Exchange Tips: 5.4.6 Hop count exceeded - possible mail loop - Forest Migration