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.


  • due to changes in Microsoft policies, we can no longer set up federation with consumer Skype for our customers in the shared environment. Customers hosted on dedicated platforms continue to have this functionality enabled until further notice
  • 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 - for the Exchange domains < EXCH082, EXCH500 and EXCH580
    - for the Exchange domains > EXCH083
    or for EXCH084
    for EXCH091

    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.
  2. 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 for both domains;
    2. submit Extended Service request for each account (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 for each account (Skype for Business/Lync: Federation).
  • If it is necessary to add regular Skype users:
    • submit Extended Service request (Skype for Business/Lync: Federation).
      Note: in the Customer Notes, state that federation is required to add regular Skype users, other fields can be left blank.

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.