Contacts and Presence do not work for remote clients

[SupportRequestor]

I have 3CX behind a reverse proxy which has resulted in presence and contacts not working (soft-phones report that they could not contact the API but can still make phone calls). If I take the reverse proxy out of the picture it works. Does anyone have any insight into what might be going on?

 

[leejor]

I would hazard a guess that the port(s) used for those services are blocked, while port 5060 is not.

http://www.3cx.com/blog/docs/ports-used/

 

[SupportRequestor]

I would hazard a guess that the port(s) used for those services are blocked, while port 5060 is not.

http://www.3cx.com/blog/docs/ports-used/

Port 80 and port 443 are open (v14 on IIS).

 

[SupportRequestor]

Does 3CX even work through a reverse proxy? Does anyone have it in that configuration?