SMTPS has been re-approved for use on port 465. The back story about this "wart" is documented in https://www.rfc-editor.org/rfc/rfc8314#section-7.3 https://www

SMTPS has been re-approved for use on port 465. The back story about this "wart" is documented in https://www.rfc-editor.org/rfc/rfc8314#section-7.3 https://www.rfc-editor.org/rfc/rfc8314#section-7.3