MTA (Mail Target Agent) log contains the following:
"CMBMConn::SetMailboxInfoE2K Warning 4807 Cannot create mailbox /o=ABC/ou=Exchange Administrative Group (FYDIBOHF23SPDLT)/cn=Recipients/cn=Fisrtname.Lastname on the target server because the mailbox already exist (ForbidMailboxDeletion = 1)."Why does this happen? The Knowledgebase has articles
72579 and
39393 explaining that Migration Manager cannot handle pre-existing mailboxes and how to work around the issue, but it was definitely the Quest tool that created the mailboxes. Why does MTA consider them as pre-existing now?