Viewmail for Outlook (VMO)

Viewmail for Outlook (VMO) Issue in Authentication-Resource Forest environment

VMO constantly prompts for authentication

The way VMO works is, it takes the credentials that were passed to it and then it needs to verify that if the user is a Unity subscriber so that it makes the correct integration to make the Outbound Call to CCM, If the user domain credentials are those of Authentication Forest (domain1) say domain1\user1 and Unity is installed in Resource Forest (domain2) then in the Unity database the user would be registered as domain2\user1 and the database lookup would fail.

The way to resolve this is to use the Unity tool grantunityaccess to make a database relationship between domain2\user1 and domain1\user1,

C:\commserver\grantunityaccess –u domain1\user1 –s user1

If the above fails try the following

C:\commserver\grantunityaccess –u user1@domain1.com –s user1

Also note that user1 in domain2 would be having a linked mailbox (in case of Exchange 2007), the exchange alias for user1 in domain2 should be used with the above command.

The above would work fine if you have a 2 way trust between the Authentication and Resource Forest.