Issue
While troubleshooting client’s issue we noticed some of the Exchange Pro workers were attempting to log in with the wrong Mail Profile thus causing public folder jobs to fail. This was more evident for workers with “Change Detection” role for this client, however, it shouldn’t be limited to that role. The error was:
“Error opening profile “Binarytree12. Error in MAPILogonEx: MAPI_E_LOGON_FAILED”
“Error Enter detecting changes job \Parent Folder\Child1\Child2\”
Resolution
To avoid this issue please reframe from creating unique Mail profile names for each worker. Rather you will need to have the same Mail profile name for all the workers in Source and Target forest. Here is an example of how the client had a unique Mail profile name for each worker for their O365 forest. To resolve this we asked them to rename all the mail profiles to “Target” as their Source forest workers were named consistently as "Source".
