Re: submission vs smtp

Andy Bradford <[email protected]> wrote:

>   Thus said Michael Richardson on Thu, 05 Jun 2025 15:55:38 -0400:
>   
>   > ...
>   >
>   > Yes, it never took off, but I've been using this for 25+ years.
>   
>   Nice to find a  fellow traveller who still knows what  SMTPS on port 465
>   is and actually still uses it.
>   
>   I still  maintain a SMTPS submission  server on port 465,  however, it's
>   rarely used anymore.
>   
>   For Ken  and those who  may not have  used it much,  it's a fine  way to
>   allow authenticated and authorized relaying as you get strong encryption
>   to  protect the  channel and  you get  authentication and  authorization
>   because the peer certificate is verified against your own CA.

I, too, run a mail-submit-with-TLS server on port 465.  And,
based on the recommendation in RFC 8314, I encourage my mail
clients to prefer it.

 < Stephen