Coming off the weekend users aren't able to log into Jabber from an external network. We use an expressway Core/Edge deployment; resolving to our Edge and passing through to the Core.
Checking into the Core/Edge connection I've discovered that the Core Server is unable to connect to the Edge Server (SIP: Failed to connect to <IP> No response from system). I'm able to log into the Edge Server and can verify it's available/online.
I checked the certificate traversal connection and it passed.
Server Certificates are not expired.
We have secondary Core/Edge deployments and both Core2 and Edge2 are able to see each other. Configurations are nearly mirrored for both Core1&2 and Edge1&2