Allow

Presence

subscriptions to users in specified domains

Your organization can use whitelisting to control which users in internal and federated

Microsoft Lync Server

2013,

Skype for Business

, or

Cisco Unified Communications Manager

environments can be subscribed to. By allowing specific email domains to be subscribed to, you can improve the performance of the

Presence

service and exclude domains that are not part of the internal or federated domains. You can also limit presence subscriptions to specific internal and federated domains. By default, the whitelisting feature is disabled and all internal and external email domain subscriptions are attempted. When this feature is configured, you can manage the allowed list from all

BEMS

servers that host the

Presence

service.

When your organization enables whitelisting, contacts in an email domain that is not listed are restricted and no presence subscriptions are attempted to that domain. Consider the following scenarios when you enable domain white listing: