chat with federated user without adding to contact list
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 don't 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 didn't work either. Hope this makes sense.