How do I unhide a hidden Exchange 5.5 mailbox? (NETIQKB45402)

goal
How do I unhide a hidden Exchange 5.5 mailbox?

goal
How do I access an Exchange 5.5 mailbox that is hidden from the global address list?

fact

Directory and Resource Administrator 7.5
Microsoft Exchange Server 5.5

symptom

Unable to unhide an Exchange 5.5 mailbox after it has been hidden.

symptom

The Mailbox Properties button is greyed out on a user object whose mailbox has been hidden.

Cause

This is by design.

fix
Directory and Resource Administrator (DRA) does not support mailbox properties for an Exchange 5.5 mailbox that has been hidden from the GAL (Global Address List).

Formerly known as NETIQKB45402