https://gitlab.synchro.net/main/sbbs/-/issues/236#note_4678
I see this issue because I'm always connected to my Thunderbird via NNTP Sometimes if you shutdown the bbs, it falls waiting for the rest of the connections to close.
when the thunderbird shutdown, the bbs shutdown correctly
--- SBBSecho 3.20-Linux
* Origin: Vertrauen - [vert/cvs/bbs].synchro.net (1:103/705)