- Plesk for Linux
Emails sent to an external account, such as Gmail, are not delivered and the following message is being displayed:
CONFIG_TEXT: security: example.com did not encrypt this message
Mail is not delivered with the following message in /var/log/mailllog:
CONFIG_TEXT: status=deferred (delivery temporarily suspended: TLS is required, but was not offered by host 127.0.0.1[127.0.0.1])
Incorrect Postfix configuration.
smtp_tls_security_level = mayis incorrect or missing in the
# grep smtp_tls_security_level /etc/postfix/main.cf