This document is for customers who are registering Jabber over the cloud, but have an internal DNS server. They need to add the following SRV record down below to their domain. Make sure it's their main domain, no subdomains.
Type = SRV
Service = _collab-edge
Protocol = _tls
Target = collaborate-atl.ct450.com or collaborate.ct450.com
Priority = 3
Weight = 7
Port = 8443