Exchange Client Cannot Resolve Hidden Recipient

This post provides information about Outlook Support for resolving Hidden Recipient Prblems.
This problem occur When you attempt to open a new profile, you may receive a Check Name dialog box with the following error message:
The name could not be resolved. The name could not be matched to a name in the address list.

Solution:

Open the Exchange Administrator program and temporarily unhide the recipient from the Address Book by following these steps:

1. From the View menu, select Hidden Recipients.
2. Double click the Recipients container and highlight the mailbox desired.
3. Double click to view the properties of the mailbox.
4. Select the Advanced tab and uncheck the "Hide from Address Book" option.
5. The name can be resolved at this point. Once this is completed, you can hide the name from the Address Book again if needed.