Dnia 17.04.2021 o godz. 11:56:54 Dan Mahoney (Gushi) pisze:
> 
> The dayjob has a number of machines out in the wild that need to be
> able to send mail (mostly from cron jobs) home to the mothership.
> Not all have controllable reverse DNS.  It's an issue with donated
> colo and transit. Doing a bunch of tunnels would work but it's a
> really stupid answer.

I don't fully understand why do you need *relaying* in your scenario. Can't
they just send emails to address located on your "mothership" server? In
that case you have a scenario of simple incoming mail, no relaying at all.
-- 
Regards,
   Jaroslaw Rafa
   r...@rafa.eu.org
--
"In a million years, when kids go to school, they're gonna know: once there
was a Hushpuppy, and she lived with her daddy in the Bathtub."

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