In ESM on Mailbox store can I give Domain Admins "receive as" permission. It's inheriting deny permission and I believe that would allow msextmx to run?
The Exchange View only Administrator and Local administrator of the computer that is running Msextmz.exe has the permission of View Only for Time Zone Extraction. For updates Domain user who has full mailbox access and send as rights to all mailboxes and the local administrator of the computer that is running Msextmz.exe. Also refer to the script at the end of KB 930879.