@giacomo This afternoon I worked with rspamd and I build some rpms from master, so my rpm was uptodate.
After the installation on two servers, I cannot anymore login with roundcubemail on two servers (one VM and my server), either for email@example.com or for root
you can find in log this
[20-Apr-2020 21:45:10 +0200]: <ai2p4rav> IMAP Error: Login failed for firstname.lastname@example.org from 184.108.40.206. Empty startup greeting (localhost:143) in /usr/share/roundcubemail/program/lib/Roundcube/rcube_imap.php on line 197 (POST /webmail/?_task=login?_task=login&_action=login)
once I downgraded the rpm the login is good now
I saw that we have some commit merged (but not released) : https://github.com/NethServer/nethserver-mail/commits/master