How can I remove the garbled SMTP addresses from target mailboxes after the migration is complete? (NETIQKB45462)

goal
How can I remove the garbled SMTP addresses from target mailboxes after the migration is complete?

fact
Exchange Migrator 1.x

fact
Exchange Migrator 2.x

symptom
After I migrated mailboxes, they have randomly-generated addresses for the SMTP address.

fix
Exchange Migrator currently does has no way to remove these randomly-generated SMTP addresses. You could create a script to automate the process of removing unwanted SMTP addresses from the target mailboxes.

note
NetIQ Technical Support does not currently have a sample script available for this issue.

note

Note: The request for this type of functionality is being considered for a future release, however, at this time there has been no decision made to include this feature.

note

For information about why there is a garbled SMTP address, see the following KB Article:

The SMTP address on the source Custom Recipient is garbled after migrating a mailbox. 
https://www.netiq.com/kb/esupport/consumer/esupport.asp?id=NETIQKB2192 

note

For more information on scripting and sample scripts please visit Microsoft's Script Center online:

http://www.microsoft.com/technet/scriptcenter/default.mspx

Formerly known as NETIQKB45462