@zloygik, поднять свой почтовый сервер на основе https://gitlab.com/simple-nixos-mailserver/nixos-mailserver.
Для примера, моя конфигурация: https://code.dumpstack.io/infra/mail.dumpstack.io
@Camel, Tabiger 60W.
Converted my old Pentax K20D to near-infrared (870nm+).
I had never disassembled cameras before. Weird that isn't possible without soldering iron. Curious what's engineers were thought about repairability.
@Camel, it uses 52mm filters. So, there's already plenty of them on the market.
Different kinds of shadow, ultraviolet, polarized ― whatever you want and stackable!