Postfix using wrong cert — CyberPanel - WebHosting Control Panel for OpenLiteSpeed

Postfix using wrong cert

Hi, I don't know where to categorized this post but I encountered an error.
I am trying to set up a smtp server so far it works fine but there is a slight problem.

Postfix seems to using a wrong cert for my mail server.
I already tried issuing a SSL (mail server ssl) for my and I also add a SSL for web but is seems like it is not working properly.

This is the error that comes up whenever I test the CERT.

Cert VALIDATION ERROR(S): self signed certificate
So email is encrypted but the recipient domain is not verified
Cert Hostname DOES NOT VERIFY ( !=
So email is encrypted but the host is not verified


  • My DNS are all good. The problem I have is that postfix/dovecot is using wrong TLS Cert and that is why my smtp server always says TLS mismatch.

    I check the .pem files under /etc/postfix and /etc/dovecot and everthing is right.
    Where does the postfix get those wrong cert.

    The cert postfix read is "" SSL cert.
  • etc/postfix/
    myhostname = - replaced?
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