Am 04.01.2017 um 12:47 schrieb Wietse Venema: > > You need to make smtp(8) talk to a TCP port (or UNIX-domain port), > an arrange for a little daemon that listens on that port, and that > invokes ssh when a connection is established to that port. Then > the little daemon shuttles bits up and down. Such an on-demand > TCP relay could be done in Perl, Python, or any capable language.
Thanks. The TCP relay and asynchronous or triggered start (even through autossh) is exactly what I'm considering brittle and am trying to avoid; I am looking for something synchronous. Looks like we still don't have that without someone extending the smtp client's source code.
