Federation

Over the past month, I have had a few different SfB Server (On-Premises) customers report issues Federating with Skype Online (O365) customers. This includes customers who have SfB Hybrids and users homed online. The On-Premises customers have O365 tenants for other services and I always tell non-hybrid Skype On-Prem customers to ensure they don’t assign any Skype Online licenses to users. If they assign an E3 or E5 they should un-check the “Skype Online” license box and for many years, this has worked fine. ...

A customer was having problems with their Lync 2010 deployment federating with Office 365. When searching for a Lync Online user they would see “Presence Unknown” and be unable to send Instant Messages. They could Federate with other On-Prem Lync organisations OK. They had LyncOnline configured as a Hosted Provider and Partner Domain Discovery Enabled (Dynamic Federation). Their _sipfederationtls._tcp DNS record was configured correctly as was the O365 customer. Using OCSLogger and Snooper on the Edge server I was able to spot the problem. ...