> On Mar 20, 2019, at 11:51 AM, Ralph Seichter <ab...@monksofcool.net> wrote:
>
> As far as I can see, RFC 8314 is only in the proposed standards stage,
> so no, the use of port 587 is not deprecated.
That's one of the common misperceptions of of the IETF standards
process. Proposed standards are IETF standards. Full standards
are those standards that have matured to the point where they
are known to be widely used, broadly interoperable and stable.
But there's not IETF police to enforce the standards, and not
all the standards succeed in the marketplace.
--
Viktor.
