We have some users in a domain and some users not on the domain. The datacenter is a remote location from all user sites. When our certificate expired last week, people who are on the domain using NTLM are able to connect without any problems; however others not on the domain were not able to connect before we renewed the cert. Any thoughts on why this is? Do people using a domain profile connect differently to exchange? Everyone should have been connecting via RPC over HTTP/s.
I'm certainly no expert in exchange, but trying to learn. Any insight would be appreciated.