We have a client with Exch 2007 where we have installed the UCC (we have done this for many clients, OA/autodiscover works) and we cannot get outlook anywhere to connect via autodiscover or manually configured. External DNS is correct with A autodiscover.client.com. We believe the problem is that their www record is at their vendor's webserver and testexchangeconnectivity FINDS an autodiscover xml at that site. That then fails on a Cert name mis-match.
On the second step (autodiscover.client.com), testexchcon DOES find our valid 2007 cert and all passes.
We do not think OL gets past the first cert name mismatch to our good cert.
We even tried removing the DNS A record autodiscover.client.com and adding the srv record, but thats checked last and we think autodiscover stops on first step. Any way to bypass the first check on domain.com or other ideas?