So, I've done a fair amount of digging and I can't find a real resolution for this. One of my users asked me to look into why she was getting an error message when she sent an SfB message to a client that uses the same service. I figured it was on the client's side since we (the organization) and she are both setup to communicate with all external domains that aren't blocked.
This morning I found out the client can't even see that we're online, so there's 0 communication there. I ran some tests with a few different Skype & SfB accounts and wasn't able to get them to talk.
So now it's our problem...
THEN...the service tech comes in and tells me another user is able to communicate with the outside world. This prompted another test. I added him as a contact from SfB and I'm now able to communicate with his Skype account. He added me as a...