A user who is part of a domain that is not in the Allow list can send messages to an Office Communications Server 2007 R2 user


Symptoms


In a Microsoft Office Communications Server 2007 R2 environment, you add the Session Initiation Protocol (SIP) domain of a federated partner in the Allow list on the Access Edge server. However, a user from a domain that is not in the Allow list can send messages to the Office Communications Server 2007 R2 users.

Resolution


To resolve this issue, install the following cumulative update:

2501719 Description of the cumulative update for Office Communications Server 2007 R2: March, 2011

Status


Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.