Hey, I'm looking for a way to enable my existing Postfix/Mailman mailing list server with HF capability- to both send, and receive PGP-signed, or encrypted email over radio reliably, as well as have the option to have some transmissions either re-transmitted over the Internet.
Apparently there's Winlink[1] and it's what the Americans use, however it seems if not proprietary, then heavily locked while I'm looking for a Free software solution, preferably over GNU Radio and affordable SDR such as LimeSDR[2] which is what I'm trying to master at the moment. Unfortunately, I couldn't as much as find a reference protocol, anything, really- to suggest how I would typically approach this- what bands, modes, encodings are used to transmit email over the radio. Are there any existing GNU Radio-operated email servers and/or networks I could use for reference and future collaboration? I'm heavily invested in the idea of hardening my email infrastructure in case of an emergency, and if Internet goes down in my country, I still wish that my server would remain operation over the radio. -badt [1]: https://www.winlink.org/ [2]: https://wiki.gnuradio.org/index.php?title=Hardware#Lime_SDR > I've heard the noise of a virtual machine > Now I'm stuck in the reality of backlash > And cashed-in chips.
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