--On Monday, 19 December, 2016 08:20 +1300 Brian E Carpenter <brian.e.carpenter@xxxxxxxxx> wrote: > On 18/12/2016 23:15, S Moonesamy wrote: > ... >> Yes. We might end up having to consider whether to attribute >> semantics to the <display-name> as a way to solve the >> problem. Let's assume that 20% of IETF mailing list >> subscribers use a "p=reject" domain name in the "From:" >> field and that they are no longer allowed to post messages >> to the mailing list because of the policy advertised by that >> sending domain. What should the mailing list moderator do in >> response to complaints from those subscribers? > > Send them a canned message stating that the only solution > available to them is changing to a different From address that > does not have this issue. What else can they do? Note that this is very similar to one of the options for an SMTPUTF8-capable IMAP or POP server to take when the client does not present itself as able to accept should messages, i.e., "there is a message you could receive (with SMTPUTF8 POP/IMAP) or send (with a different mail provider) if you were running in a different environment, but, with your current environment, you lose." john