I have our RPC over HTTPS working with an internal client. With an external client, I get the "Outlook must be online or connected" message. I think I've tried all the suggestions in the posts here, at amset, and elsewhere, but still need help. One thing I'm not sure about: I have a single Exchange 2003 server, so I have been using the single-server configurations. However, this is a single Exchange server, but the domain controllers, and web servers are separate. Is this still the correct configuration, or do I need to use different registry settings? We have a Netgear firewall with port 443 open and pointed to the mail server.
Next: Some configuration pages I've read indicate that the ValidPorts key should include 100-5000, but others do not.
I have purchased and registered a certificate to our mail server, mail1.company.com. Do I actually need the mail server registered? I haven't seen anything which indicates so.
The only change I've made on the domain controllers (since they are also GC servers) is the NSPI interface protocol sequences key.
More information will be provided as requested.
Thanks in advance!