Archived-At: and List-Archive: headers are wrong
current code generates these URLs with
and in comments recognizes that email domain and web domain may be different. There is also the problem that the scheme in the URLs is http even when it should be https.
It seems both of these things can be addressed by using the Hyperkitty configured
base_url general setting, e.g.
Although I suspect this is not quite right. I.e., in the case where the configured
https://lists.mailman3.org/archives this might result in
https://lists.mailman3.org/archives/archives/list/... instead of