Smoothwall and Exchange 2007 with Full Outlook 2010 client issue
We have a smoothwall box which seems to be working correctly as it should with regard to our web-filtering.
We have our in-house hosted Exchange 2007 server which has an external address of www.bitcoinmerchandise.com | buy stuff with bitcoin
When running Outlook 2010 client when using our smoothwall proxy, whenever Outlook client runs it prompts for username and password, even if the remember credentials box is checked. This is on Windows 7 btw.
If using our "techie" non-smoothwall proxy, this issue goes away, and it is commonplace on our admin computers which run the full outlook client (not OWA) whilst using smoothwall as a web-proxy.
I have tried adding numerous proxy exceptions to the users, including the IP of the exchange box, the local hostname, and the external address, all with no luck.... We do have auto discovery off, which I think might be linked to the problem, but we cannot run this anyway, as we are behind our county council corporate WAN firewall.
I am sure this is some configuration issue with smoothwall that can be resolved - can I put some sort of proxy exception into smoothwall for this or is it something else.
I have tried in outlook settings to turn off "Encrypt data between client and Exchange Server" but this didn't seem to do anything either.
Can anyone help?