On 2025-05-22, The Wanderer <wanderer@fastmail.fm> wrote: > > These days, I would be *surprised* if most mail-accepting domains *did* > have a postmaster address - and even more so if they actually had > someone monitoring it, or otherwise ensuring that mail sent to it didn't > just get dropped into the bit bucket. Couldn't you telnet into the SMTP server and make a few intelligent guesses?