Domain Rewrite: Email Looping after enabling Rewrite (4372082)

After turning on Domain Rewrite for the users, an email loop started and stopped messages from being delivered.

As part of the Domain Rewrite process, a forwarding rule is configured on the user account. If, during the mailbox migration, an additional forwarding rule is set on the ODM mailbox in the opposite direction, this will result in a mail loop.

• Make sure to disable the forwarding setting in the ODM Mailbox Workspace before enabling Domain Rewrite.
• Alternatively, you can simply skip the option to enable forwarding when turning on Domain Rewrite (please note this is only if you have already enabled it with the mailbox task).