since you are saying that this has to work without any configuration step, I'm surious as to what MUA you are using that works without any configuration.
Posted Aug 12, 2013 21:48 UTC (Mon) by mjg59 (subscriber, #23239)
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Sigh. No, that's not what I'm saying. What I'm saying is that you can't depend on there being a system-wide MTA that can deliver to the outside world, and as such any software that's expected to run on arbitrary machines cannot rely on the sendmail command doing anything useful.