Are they still fundamentally constrained by their choice of network provider, despite complying with every possible security and delivery behaviour to warrant and verify the content and sender of every email?
Yes. Remember, nobody else cares as much about the mail you send as you do.
Has the prevailing method of deciding worthiness now become permanently biased towards the 'prior reputation' factor?
Yes. See above.
If so, would an operator ever be able to build the kind of reputation to have reliable delivery to the big public services, without resorting to using third party delivery providers? To me that feels like an expensive cop-out and is assisting the creation of a de facto oligopoly (never mind all the arguments about a two-tier email ecosystem, net neutrality etc).
Find a provider that keeps its spamming customers under control. It's not hard, they do exist, but you're not likely to find them selling self-serve VPS for $2/mo.
Regards, John Levine, jo...@taugh.com, Taughannock Networks, Trumansburg NY Please consider the environment before reading this e-mail. https://jl.ly _______________________________________________ mailop mailing list mailop@mailop.org https://chilli.nosignal.org/cgi-bin/mailman/listinfo/mailop
