FASTPANEL - dovecot - Diffie-Hellman key exchange requested, but no DH parameters provided

Ошибка

tail -f /var/log/mail.err
dovecot: imap-login: Error: Diffie-Hellman key exchange requested, but no DH parameters provided. Set ssh_dh=</path/to/dh.pem

решение:

# openssl dhparam -out /etc/dovecot/dh.pem 2048
# vi /etc/dovecot/conf.d/10-ssl.conf
ssl_key.....
.......
ssl_dh = </etc/dovecot/dh.pem

# systemctl restart dovecot

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