While I know this would result in lost mail, would it be possible with postfix to setup a mail server that:
1) Only accepts encrypted connections 2) Only sends encrypted emails 3) Keeps mail encrypted throughout, including only writing encrypted blobs. and is there a way to setup an IMAP server to read that encrypted mail and, again, only serve/accept encrypted mail. I assume there is some metadata that must be unencrypted (to and From_, I’d guess), can the rest of the metadata be encrypted (Data, received, any other headers). Again, I know this is not practical for a normal mail server, but is it *possible*?
