XADM: Service Account Can Log In to any Mailbox

ID: Q147354

The information in this article applies to:

Microsoft Exchange Server, versions 4.0, 5.0, 5.5

SUMMARY

When you are logged in to a Microsoft Exchange Client as the Microsoft Exchange Service Account, you will be able to open any mailbox to read or send mail.

MORE INFORMATION

This is by design. By default, every mailbox inherits the Microsoft Exchange Service Account that is given Service Account Admin permissions. One of the rights for Service Account Admin is Mailbox Owner.

For more information about the Microsoft Exchange Service Account logging into mailboxes, please see the following article in the Microsoft Knowledge Base:

Q147362 XADM: Event ID: 1016 Logged Incorrectly in Application Event Log

Additional query words:

Keywords : kbusage XADM exc4 exc5 exc55
Version : winnt:4.0,5.0,5.5
Platform : winnt
Issue type : kbhowto