Hello, I would like to use only trusted TLS connections to a SMTP server of a friend of mine. If the trusted TLS connections fails, I would like that Postfix abort the sending or reception with appropriate error messages than the sender or receiver will be notified about that mail could not be sent or received.
Additionally I don't like to pay for a TLS certificate, I would like to simply import the public key of the SMTP server of my friend into my local postfix installation (and vice versa for him). How can we do that? I found no possibility to add own public TLS keys somewhere? -- Best regards, Peter Bauer Linux & UNIX administrator
