I'm trying to get our external webmail functional internally. I've added mail.mycompany.com as a forward lookup zone in DNS. I've got the affiliated A record which is the same as the host. I've got the reverse lookup setup to point back to the internal IP address. I get the login prompt. However after 3 tries I get HTTP Error 401.1 - Unauthorized: Access is denied due to invalid credentials.
Internet Information Services (IIS)
I've removed the reverse lookup for mail.mycompany.com and get the login prompt. 3 strikes and Error: Access is denied.
Any assistance that gets me passed this hurdle is greatlyappreciated.