Setting up Office365 for a client who had their domain with BT (yay), the BT domain/DNS management is very basic, and doesn’t give many hints on how SRV records should be entered. As BT doesn’t allow you to easily update the nameservers to ideally handle DNS elsewhere, I had to stick with keeping DNS with BT/Register.com.
Here is a screenshot of the working SRV records in the BT DNS management interface:
This works and is accepted by Office365. The order for the value field should be priority, weight, port and then target. Remember to leave off the trailing full stop after the domain.
SRV _sip._tls 100 1 443 sipdir.online.lync.com
SRV _sipfederationtls._tcp 100 1 5061 sipfed.online.lync.com
I hope that saves someone a bit of head scratching. Leave a comment if you found this useful!
Hey thanks for this – I was almost ready to enter my own details but this confirmation was really useful.
BT DNS management portal … what a crock of sh…..