Production mail server.
Remove 2 accounts.
Removed first account from Cockpit, user deleted, user’s mail store not deleted.
Removed 2nd account from old server manager, user deleted, user’s mail store deleted.
I reproduced the issue. Relevant lines in /var/log/messages:
Jan 14 17:03:01 nethservice esmith::event[14731]: [NOTICE] Maildir for ttf does not exist, skipped. at /etc/e-smith/events/user-cleanup/S10nethserver-mail-account-cleanup line 39.
The maildir is still there:
[root@nethservice ~]# ls -ld /var/lib/nethserver/vmail/ttf\@nethesis.it/
drwx------ 3 vmail vmail 21 Dec 31 15:35 /var/lib/nethserver/vmail/ttf@nethesis.it/