Skype for Business/Lync Federation is a functionality which allows users to communicate with others outside their organization. All features included in your license will be available (read the Knowledge Base article on Skype for Business Standard Vs. Skype for Business Enterprise for more information).

Note: Skype for Business/Lync Federation can be set up on a domain-per-domain basis. If you need federation to be enabled with several domains, each setup will be performed individually.

We cannot set up federation with or Office 365 (Lync Online) at this time.

In order to enable that functionality, perform the following steps:

  1. Create _sipfederationtls._tcp. SRV record: SRV 0 0 5061 lyncsip.XX.XX.XX
    or SRV 0 0 5061 skypesip.XX.XX.XX

  2. The correct settings can be found under  HostPilotĀ® Control Panel > Services > Domains > Click on your domain name > click Display DNS records > click Show System Records.
    Read the Knowledge Base article on How To Add SRV Record To Your Domain for more information about SRV record syntax.
  3. Submit Skype for Business/Lync: Federation extended service request under HostPilotĀ® Control Panel > Support > Extended Services. Read the Knowledge Base article on How Do I Use The Extended Services Portal? for more information.


  • Even if both accounts are hosted with Intermedia, but on different lyncsip.XX.XX.XX or skypesip.XX.XX.XX servers:
    1. create SRV record;
    2. submit Extended Service request (Skype for Business/Lync: Federation).
  • If both accounts are on the same lyncsip.XX.XX.XX or skypesip.XX.XX.XX:
    • submit Extended Service request (Skype for Business/Lync: Federation).

After the federation is set up, in order to send a message to external contact, search the contact using full email address:

Note: there are currently some issues with Skype For Business and Consumer Skype federation. Read the Knowledge Base article on Skype For Business And Consumer Skype Federation Known Issues for more information.