"ERROR: [1250-53-5-00000000] Could not find user in Global Address List" (4293328)

When running Notes Migrator for Exchange (NME) administrative driven batch migration, NME reports errors:

ERROR: [1250-53-5-00000000] Could not find user in Global Address List (GAL)

Possible causes:

1. Active Directory (AD) users were not created and mailbox enabled

2. Mailbox could not be accessed

3.You are running the mailbox-enable process and mail routing at the same time.

4. Outlook profile in NME server is corrupted

5. Verify there is only one instance of the user in AD, not a contact and a mail user.

Perform the following:

1. Verify that the AD users are created.

• If not, please create AD users and populate the AD

2. Verify the AD users are mailbox-enabled. Meaning that all the target migrated users must have a mailbox and must appear in the Global Address List (GAL)

• If not, please create the necessary mailbox and ensure the users appear in the GAL (view via Outlook from the migration console)

3. Verify that the affected mailbox is working

• If the migration works for some users, but not all users, launch Outlook using the affect mailbox user and verify that you are able to access the mailbox
• If not, please recreate the mailbox as it could be corrupted

4. Running the mailbox-enable and mail routing processes at the same time can cause a timeout because of replication. Please test this by running the processes seperately. Also read the following article on how to troubleshoot this and be able to run the processes together in the future, Quest Solution 34753 - Exchange 2007 Mailbox enable process explained.

5. Delete the contact migrate the data