I got a few questions about server 2 server connections.
DNS: Are SRV entries required or will a single A Record work for each server?
A Server1 IP
A Server2 IP
Also do I need to make entries for search and conference, I have never needed to running the server locally but I don't know if I need that for S2S.
Ports: So I know 5269 needs to be open but on our firewall which we have done on both sides, we are seeing ports in the 30000-60000 ranges as well, do we need to open that range?
S2S: one server shows both way and one shows incoming only with the TLS lock displayed, The server with incoming only can get messages but cannot send back, we can't figure out why it is only one way. We can telnet to 5269 on both servers from the other server without issues.
Debug Logs: If I look in the debug logs, I see nothing about the s2s connections, even if I search the log for the name of the other server I see nothing, could these logs be going some place else?