i have made a mailman list and a test list on commandline, both are not shown in the mailman virtualmin module. i can reach the webconfig for mailman but not via the virtualmin module.
You need the Webmin module. On top of my head I cant remember the link. Try to search. I used CentOS 8 and webmin module worked for that. I am not sure about CentOS 7. Perhaps others may know and will reply. I currently use Mailman v2 on a CentOS 8.5 that was converted to AlmaLinux. Mailman still works fine albeit old version.
also the mailman list are not shown but in the commandline.
and when i will access the url from the email, like this: http://domain/mailman/admin/mailman
i have a - You are not allowed to manage this list
now i have removed the modul via the webmin moduladmin and have reinstalled the modul via yum install wbm-virtualmin-mailman. I have createt a new mailman list, and this is not shown in the mailman wbm module, i recieve a mail with a link,
You can configure your mailing list at the following web page:
Just double checked mine and version I use is 6.9 but on CentOS 8, I don’t know if CentOS 7 is using a different version. By any chance, if you switch theme language to English - does that make any difference at all? in terms of what is being displayed/ options / features that can be seen.