We are using RCP/HTTP for Exchange access for all portable machines on our network. We are able to get RCP/HTTP to work external from our network using Basic Authentication, and We are able to get NTLM to work when inside our network. Unfortunatly, we cannot get NTLM to work outside our network. When we start Outlook on an machine that was verified working locally, it waits then asks for a login. The user can then try logging in using the user id alone as well as the basic authentication format (doman\username) and it will not authenticate.
Any ideas what might be causing the issue?
We have a fully qualified domain and are using a Sonicwall hardware firewall and have forwarded WAN requests from the following ports to the exchange server:
5800 - 5900 (TCP/UDP)