Cannot Access Homeserver.com Home Page

I've just reinstalled WHS v1 on my server, following a HDD crash after nearly five years.  Now, I can get to my homeserver.com landing page, but not the home ('log on') page:

 

http://domain.homeserver.com/home/ - works

https://domain.homeserver.com/remote/ - "page not available"

 

I also tried using my IP Address:

 

http://ip-address/home/ - works

https://ip-address/remote/ - "page not available"

 

If I try locally, using the server name, I can get to both the landing page and the home page (and I can log in successfully):

 

http://servername/home/ - works

https://servername/remote/ - works

 

Port forwarding has been set up on my router (BT Home Hub 3) for http, https and rdp (port 4125).  This was working fine before the rebuild, and has not been changed since.  (I have restarted the home hub to be sure).

 

I am using a different homeserver domain name (because I couldn't reconfigure WHS to use the old one), but don't see why this should be significant.

 

Does anybody have any suggestions as to what might be the problem.

 

Thanks for your help.