I'm trying to set up mailman3 on two hosts, one of which runs core + exim, the other runs postorius (&possibly hyperkitty).
I have I think got core set up correctly, and postorius is sort of usable, but anything in the web ui that talks to core ends up with a white screen.
I think what is happening is a postorius URL ends up with the core (or perhaps no) hostname, and as there's nothing there to answer it fails.
I've checked the settings and I don't think I have misconfigured postorius. Is it possible that the bad url is being passed from core to postorius in some way and reused without changing the host?
In the config at present, both hosts are visible to the browser, and each host can communicate with the other.
Any ideas on how to pin down the problem better?
Ruth