just finished migration from sbs 2003 to sbs 2011 with exchange 2010 installed.
External DNS is correct as is firewall as far as I can tell. outlook RPC over HTTP work when 2003 was up and running (server still in the network actually as not ready to remove yet)
outlook web access works from the world - remote.extdom.com
unfortunately when configuring outlook I get the following error
The action cannot be completed. The connection to Microsoft Exchange is unavailable. Outlook must be online or connected to complete this action.
Your server or mailbox names cannot be resolved.
There is a problem with the proxyy server's security certificate. The security certificate is not from a atrusted certifying authority. Outlook is unable to connect to the proxy server remote.extdom.co.uk (error code 8)
I am working on getting a 3rd party UCC cert which should be in place today or tomorrow but why can I not connect at all?