At first glance it might seem like good sense to use a Raspberry Pi or
similar devices in some such scenarios. Though it's trickier that it might
seem at first.
I totally take your point about equipment needing to be suitable for an
industrial environment. My point, perhaps not well expressed, is that a
pi has all the computing power needed for a mail gateway.
FWIW, there are a lot of vendors selling industrial raspberry pi's.
Here's one of them:
https://revolution.kunbus.com/revolution-pi-series/
Regards,
John Levine, johnl(_at_)taugh(_dot_)com, Taughannock Networks, Trumansburg NY
Please consider the environment before reading this e-mail. https://jl.ly
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