Users exist, no quota issues. All mailboxes sent with no problems and just a few account couldn't receive. What I did was: Tools -> Resync and...
Didn't change nothing global. Thank you!
Easy solution. Go to Tools -> Resync, and in my case, just Mailboxes.
after update to 3.2.7p1 I'd start having "User unknown in virtual table" just in some accounts. OS was on Debian 9 and also update to 10, but no...
Separate names with a comma.