Groupwise 8.03HP3 running on OES11SP2

I'm in the process of moving my system to Linux in preparation for upgrading to GW2012 or 2014.
I just installed a new secondary domain on a new OES11 server and the MTA's webconsole does not function.
The default website, NRM and iMonitor on the server all work fine.

The security cert is set up in the MTA SSL settings, I have a login name and password set and the port shows the default 7180. I've tried both requiring and disabling SSL on the HTTP port.
When I run ./grpwise status, the mta is running and my other MTA consoles show the domain as connected.

Any suggestions on where to start looking? I can't find anything in the documentation about where the components for the web console are located.