> > Without a Postfix instance around, just 'echo' a message to the > > milter listener? > > Nope. Milters speak a binary protocol. You can't just echo an email > message into it. > > I think it would be easier to implement your tests with SMTP, using > XCLIENT to impersonate any IP address, and to have Postfix do the > translation to the Milter protocol for you.
I'll take that advice, thanks. Probably useful too to RE-discover how to spin up _just_ an absolutely minimal-for-the-job Postfix 'test' instance. I've been building & running my 'full' production instances of Postfix for so long, THAT felt like overkill here.
