1. CWP güncelleyin.

sh /scripts/update_cwp

2. Roundcube güncelleyin.
sh /scripts/mail_roundcube_update

3. Mail yetkilerini tamir edin.
/scripts/cwp_api account mail_fix_permissions

Logları İnceleyin.
 
/usr/local/cwpsrv/var/services/roundcube/logs/errors.log 
/var/log/dovecot.log

Dizinleri kontrol edin.

chown vmail.mail /var/vmail
chmod 770 /var/vmail