We serve clients who must conform to certain legal and industrial standards. The general principle is to reject anything that cannot be traced back to their sender or falls outside their legal range (mail from nation X without bilateral agreement of cooperation against internet crime).
According to our monthly statistics, the rejection rate is >75%, not including the firewalls work. It is rare, but some spam still gets through. On mid, the rfc speaks clearly. We just conform to it, and expect everybody else to do the same. Happy new year! Sent from ProtonMail Mobile On Mon, Jan 1, 2018 at 15:59, David Jones <djo...@ena.com> wrote: > Wow! You must not have any spam problems because you don't accept much email > -- ham or spam. :) I think some mail systems will keep the same message-ID > per email thread so your system must reject some replies. There is no way > that most of us on this mailing list can be as strict or our customers would > complain constantly about missing email. -- David Jones@ntmhdcweb20sb> > @psfc.mit.edu> @psfc.mit.edu>
