Could anyoine tell me what is going on here please:
When I access OWA from the address http://server/exchange
and click on a hyperlink to a website, within a message, the website is displayed in a new window.
However, when I do the same from the same OWA from the internet using https://webmail.mydomain.com (which is created as a new website in IIS by Exchange System Manager, and using forms based authentication) the new window pops up with the logon screen displayed instead. The message "You could not be logged on to Outlook Web Access. Make sure your domain\user name and password are correct, and then try again." is displayed in red above the authentication boxes.
Why would this work internally, but not externally - any ideas?