On 2024-11-01, at 07:44, Brian E Carpenter <brian.e.carpenter@xxxxxxxxx> wrote: > > On 01-Nov-24 18:58, S Moonesamy wrote: > ... >>> And if some government makes STARTTLS illegal ... > > ... the it simply doesn't matter whether it's a might, a MAY, > a SHOULD or a MUST in an RFC. Implementers and operators will > do what they need to do. (It does, as an interoperability requirement usually affects both sides, and the legal requirement may only affect one side.) Grüße, Carsten