Outlook 2007 wants password over HTTP. (Exchange 2007)

Question

I have an Exchange 2007 configured with ActiveSync and RPC over HTTP.

Here are the things that work:

• Outlook inside the network.
• Mobile devices.
• Outlook Web Access.

Only thing that doesn't work is:

• Outlook outside of the network.

Whenever, someone is outside of the network trying to access their email via Outlook, they get prompted with their user name and password constantly. The machine can reach the network over HTTP, therfore the firewall configuration seems to correct. The machine also has the proper root certificate.

I am not sure what's going on here. Any tips will be well appreciated.

Thanks!

Answer 1

Okay, found it!

http://support.microsoft.com/kb/927612