John Levine via mailop skrev den 2023-07-26 06:44:
This is a very old idea. See
https://en.wikipedia.org/wiki/POP_before_SMTP
It's not clear who originally invented it. It may have been me.
maybe before ipv4 nat was implemented where a single ipv4 could have
millions of users in just one timeframe limit, it worked well for no
auth :)
lets see if taugh.com can fix tls in port 25
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