I have a split dns for my domain and added the A record mail.domain.co.uk to point to my exchange server.
Internally this works fine, even on my ISA 2004 server. I have forwarded port 443 on my ISA server and I can hit it externally but I am getting the error message "The target principal name is incorrect" and I cant seem to find a way around it.
My publish rule forwards port 443 to mail.domain.co.uk which is all resolved. I have flushed the DNS cache using dns tools on the ISA server.
Any ideas what I need to do? this is a wildcard certificate for *.domain.co.uk and I am trying to access the site using mail.domain.co.uk/owa
common name of the certificate is mail.domain.co.uk and here is an extract from the logs on isa
Log type: Web Proxy (Reverse)
Rule: webmail https
Source: External ( xx.xx.xx.xx:0)
Destination: (mail.domain.co.uk 192.168.xxx.xxx:443)
Request: GET https://mail.domain.co.uk:443/owa
Client agent: Mozilla/5.0 (compatible; MSIE 10.0; Windows Phone 8.0; Trident/6.0; IEMobile/10.0; ARM; Touch; NOKIA; Lumia 920)
Object source: Internet Processing time: 1
Cache info: 0x8 MIME type: