> On 11 Jan 2015, at 8:00 pm, Wietse Venema <wie...@porcupine.org> wrote: > > Mark Nottingham: >> Hi, >> >> I?d like to insert SMTP headers and/or body content (e.g., using alterMIME) >> in outgoing e-mails *if* the SMTP connection to the recipient is not >> protected by TLS. >> >> Is this possible in postfix today, or would it require a change to source? > > No, you add the headers with a policy daemon, a Milter, or with > an SMTP-based content filter. > > With a policy daemon in smtpd_data_restrictions, use the PREPEND > action to add a header when the encryption_protocol, encryption_cipher > or encryption_keysize attributes are empty. postfwd might have > all that you need. > > Milters are available in Python, Perl, C, Java, and probably more > languages. Just look at your Postfix's Received: header, assuming > that you have "smtpd_tls_received_header = yes". You may also > be interested in "smtpd_sasl_authenticated_header = yes”.
Thanks! -- Mark Nottingham https://www.mnot.net/
