When I try to partner the principal to the mirror I get the error:

The server network address "TCP://<server>:5022" can not be reached or does not exist. Check the network address name and that the ports for the local and remote endpoints are operational

Strange thing is I cant partner the mirror to the principal.

I have followed all the steps listed on the article all to no avail. The service account are running under the same domain account on both databases... Any help would be apreciated.