Roundcube STARTTLS error SSL alert number 45

I’m working with a Postfix/Dovecot/Roundcube setup, aiming for a virtual user mail system that can send mail through the internet.

Everything seems to work well; Dovecote shows no problems, I can telnet into all of my ports; however, whenever I try to send mail through Roundcube I get the error:

In Roundcube logs:

As Postfix is responsible for SMTP I also checked /var/log/maillog :

To fix this add the following lines in Roundcube’s config:

After saving the file try to connect again.

Good luck!

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