No connection to mail server and [IMAP] The folder "/Public" cannot be opened. (NO [NOPERM]

[capote (Marko)]

I have executed this recommended command

/etc/e-smith/events/actions/nethserver-mail-shrmbx-modify ev 'Public' 'Public' user=user@$(hostname -d) ADMIN

The error no longer occurs.

Thank you and @mrmarkuz for the hint.