Disabling SSL Checks on the Plesk Mail Server (Linux – Postfix/Dovecot)
1. Connect to the Server via SSH
bash
ssh root@server-ip-address
2. Edit the Dovecot Settings (for IMAP/POP3)
bash
nano /etc/dovecot/conf.d/10-ssl.conf
-
Find this line:
bash
ssl = required
-
Change it to:
bash
ssl = no
3. Edit the Postfix Settings (for SMTP)
bash
nano /etc/postfix/main.cf
-
Check the following lines and change them if necessary:
bash
smtpd_tls_security_level = none
smtp_tls_security_level = none
4. Restart the Services
bash
systemctl restart dovecot
systemctl restart postfix
