Hello, Running Postfix 2.10.1.
I am setting up an internal mail relay to receive mail from other internal clients. I have a requirement that all email be received via TLS only.
I have configured TLS using our internal PKI and set the appropriate settings in main.cf and mail is being received via TLS according to the headers.
I have set smptd_tls_security_level = encrypt. According to the documentation:
encrypt: Mandatory TLS encryption: announce STARTTLS support to remote SMTP clients, and require that clients use TLS encryption.
However, the server is still willing to accept non TLS unencrypted emails from smtp clients.
Am I still missing a setting?
