Getting Registration Lost When Enabling Softphone On Micollab Application

[HungryHippo]

Hello Good Sirs,

I got a question with the Micollab client latest version 10.1.9 (build: 106554), I'm doing some test with securing our infrastructure that communicates to outside LAN to WAN and my issue now is that, I am getting registration lost when enabling our softphone inside our network and it doesnt matter if I have the teleworker on or off but If I used outside network it works fine. Is micollab doing some preliminary check with 3rd party or external mitel server before it enable the softphone capability of the client? I can see on the traffic log that its trying to communicate on 5061 port on a WAN ip, that IP is on a cloudproxy and cant confirm the legitimacy and if its legit I would rather allow its FQDN address to avoid ip changes issue on their side.

[johnp]

Almost sound like split dns isn't set up correctly as it should use the FQDN

[HungryHippo]

Where can I check that and how can I confirm?

[johnp]

Cannot tell you what is providing dns resolution for you, might do an ipconfig /all. You can ping the FQDN from this internal softphone pc and see what the ip comes back.