This applies to the following Lync Online clients that exclusively rely on EWS for lookups: Lync Mobile, Lync for Mac OSX, and Lync presence when integrated into OWA. Therefore, when Lync Online is formatting its EWS query, it appears to exclude external contacts and only include licensed Lync Online users. This is significant because according to my test results, search lookups in Lync Online appear to only query the UCS, and the UCS does not include information from the Global Address List (GAL) according to this MSFT article. Lync Online is a “wave 15” product, and therefore is written to take advantage of the new Unified Contact Store (UCS). Crossing versions is not supported and will not work (ex: Lync 2013 and Outlook 2010).Īdditionally, external contact search is not available for Lync Mobile, OWA or Lync for Mac. Outlook and Lync must be on the same version (ex: Lync 2013 and Outlook 2013). Outlook must be configured for cached Exchange Mode (this is the default configuration for Exchange Online). I wanted to write this blog article to add clarity on how external contacts can appear in Lync Online in a very limited scenario:ġ. However, it does not mention Lync Online. SAMAccountName, displayname, and CN cannot be blank.īrajesh Panda wrote a fantastic walkthrough for modifying GALSync to include the msRTCSIP-PrimaryUserAddress attribute.
mailNickname can be populated with the contents of sAMAccountName.When the targetaddress field is populated, be sure to pre-pend with SMTP: in front of the email address.When populating the msRTCSIP-PrimaryUserAddress field, make sure to pre-pend with the sip: in front of the address.For a list of which attributes are synced by DirSync, click ( here). Additionally, mailnickname and targetaddress is required for Azure Active Directory Synchronization to export the object to Office 365 so that it is accessible for the Lync Online users. By default GALSync does not replicate the SIP address attribute “msRTCSIP-PrimaryUserAddress”, so GALSync must be modified to include this attribute.The last requirement is to have the ability to search for the Lync external contacts within the Lync client itself. Both companies have enabled federation.īoth companies would like a shared Global Address List (GAL), and they plan to use Microsoft FIM 2010 R2 GALSync, so that user objects in one forest are copied as contact objects in the other forest. One company, ABC Corp has Lync 2010 on-premises and the other company, XYZ Corp has Lync Online. Let’s assume that two companies plan to merge and they want to have Instant Messaging and Presence between the two companies. Here is an interesting scenario that reveals a lot about how Lync Online operates. Update : I just updated this article to include a previously undocumented dependency, that both Lync and Outlook must be on the same version for this to work.