Support for postfix "smtpd_tls_auth_only = yes"

[muelli75]

Support for forced TSL-Authentication would be very useful

Postfix/main.cf
smtpd_tls_auth_only = yes

At this time its not working:
"SMTP Error (250) Authentication is failed"
is given

[Churro]

Hi @muelli75, the error message you are seeing in Roundcube is not related to our plugins.

Most likely you are missing $config['smtp_server'] = 'tls://localhost'; and/or $config['smtp_port'] = 587; in your config.inc.php. More information can be found e.g., here:

• https://bobcares.com/blog/roundcube-smtp-error-250-authentication-failed/
• https://www.howtoforge.com/community/threads/postfix-roundcube-tls-problem-after-perfect-server-tutorial.83449/