Meng Weng Wong <mengwong(_at_)dumbo(_dot_)pobox(_dot_)com> writes:
I don't know of any MTA vendors who are implementing PRA checking at
this time. Which kinda makes sense, because PRA is for MUAs, and
MUAs are ... mostly Outlook. 2821.mail-from is for MTAs, and
they're quite happy with SPF Classic.
If that had been acknowledged early in the proceedings in MARID (which
should have been concerned with implementation in MTAs) then PRA
should never have been 'on the table' and maybe things might have
ended up very differently.