I’ve added manual lines like rbl spam by editing the main.cf manually. Latelly wanted to make a change by webinterface. Noticed that about 56 LINES WHERE WIPE OUT from the main.cf when saving. It looks like a bug. I had to restore config from git. Of course mail stopped working.
What details do you need? it runs on ubuntu 20.04.02 virtualmin 6.16
It looks like when saving using webinterface virtualmin creates config again. We can arrange server access so it can be checked. thanks