I know it's not a popular topic. And there are all sorts of arguments against MTA-STS. But, it is deployed in the wild and has an active RFC.
To those who wish to have an RFC 8461 compliant sending server, I have created a bit of a perl solution.... https://github.com/Bobberty/MTASTS-EXIM-PERL -- "Non sibi, sed patriae" -- ## List details at https://lists.exim.org/mailman/listinfo/exim-users ## Exim details at http://www.exim.org/ ## Please use the Wiki with this list - http://wiki.exim.org/
