This environment has been upgraded from Exchange 2007 to a new Exchange 2010 server.
There are several thousand email contacts that reside under the Federation_Contacts OU. Under the Email Addresses tab for each Mail Contact, their correct SMTP address (john@othercompany.com for example) is assigned as Primary. But somehow each one got assigned internal email addresses at our company also (john@ourcompany.com and john@ourcompany.local)
Now the problem is emails to these contacts bounce back with #550 5.1.1 RESOLVER.ADR.ExRecipNotFound; not found
We have to go and delete the internal SMTP addresses that got erroneously created and uncheck the automatically update addresses based on recipient policy setting.
My question is:
1-How do we mass delete those internal email addresses for these mail contacts, taking care not to affect our internal users?
2-How do we stop Exchange (more precisely i guess, the recipient policy) from creating those internal addresses for new mail contacts?
Best Answer
I used Powershell to disable updating email address from recipient policy:
Then i used ADModify.net to strip off the secondary SMTP addresses assigned to contacts. It worked like a charm.