define condition lync_login url.domain=company_domain.com -- change based on case by case basi url.domain=infra.lync.com url.domain=edge.messenger.live.com url.domain=outlook.office365.com end
Note: The above rule example turns off authentication and also allows requests to the domains in the lync_login condition. If requests for Lync are allowed/blocked within different points in policy then the 'Allow' portion of the CPL example above can be removed.