Unity cannot connect to Exchange 2010 mailbox

[blwegrzyn]

Unity 8 with Es9 and call manager: System version: 8.5.1.11900-21.

Out of nowhere one of the mailboxes has this issue:

System version: 8.5.1.11900-21

This message has the following recipients : ([vm3131] ).   The recipient mailboxes may be disabled or inaccessible, Cisco Unity may be having trouble connecting with the partner server, or the Cisco Unity messaging component may not be properly configured.

Any ideas?

No problems with other mailboxes.

[Ginger Dillon]

Hello Bart -

Take at look at this recent post from my Cisco friend Brad Mangnani and see if that user is hidden in AD -

https://supportforums.cisco.com/message/3301386

Sincerely, Ginger

.

[blwegrzyn]

The only solution that worked was to remove account in exchange and recreate.