SFB Server 2019 onprem - federation to trusted cloud SFB Online and Teams Users (without adding them to contacts list) RRS feed

  • Question

  • Bit of a long title but this is precisely what we are trying to achieve. We have Sfb2019 deployed internally, we have set up the SIP federated providers, partner discover is enabled too. The default public federation is as the norm, in that each user has to have the others contact added to their address list to be able to message etc - which is what we want to stop unsolicited messages. What we do want though is to have a 'white list' of domains where we DONT need to add the contacts, and for them to message without restrictions. So, basically, we need some form of override to say 'even though they are hosted in O365 (as a public federation) we trust them and we dont need to add each user as a contact'... We've tried to add their domain to the sip federated domains section, and even tried adding the O365 fdqn for the Edge server against this entry too, but this didnt work either. Hope this makes sense.

    Thank you



    Sunday, January 12, 2020 9:38 AM


  • Thank you, ive taken a look at the other forum thread and it would seem that what Im saying is correct, in that you do have to add each other as contacts? According to this post from that thread (ive put some test in bold):-


    Hi mitch.jones,

    The presence status of federated contact can only be displayed when you add the federated contact in your contact list. If the federated users are not added, they can’t see presence, send IM to contacts in you organization. It is a native feature.

    If the issue persists after you add the federated partner to the contact list, please make sure your federated added your domain to their federated domain and you also add your federated domain to the list of allowed domains.

    Moreover, please make sure you have the correct steps for the federation, the following is about how to do federation for Lync sever https://technet.microsoft.com/en-us/library/jj204800(v=ocs.15).aspx


    Alice Wang"


    • Marked as answer by Philip Luke Tuesday, January 14, 2020 8:34 AM
    Monday, January 13, 2020 10:12 AM
  • Hi Phil,

    You are right. So, your ideal method is to chat with the federated user by searching not adding them to the contact list. 

    We are highly recommend you vote in the Skype for Business UserVoice( The link is: https://www.skypefeedback.com/forums/299913-generally-available/suggestions/39426913-chat-with-federated-user-without-adding-to-contact ). Your kindly feedback will improve your experience with our product.

    Thanks for your understanding.

    Best Regards,
    Sharon Zhao

    Please remember to mark the replies as answers if they helped. If you have feedback for TechNet Subscriber Support, contact tnsf@microsoft.com.

    Tuesday, January 14, 2020 8:24 AM

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