Subject: Re: bug#38066: 26.1; X-Message-SMTP-Method header does not affect smtpmail-stream-type

From: Lars Ingebrigtsen <[email-masked]>
Date: Tue, 05 Nov 2019 19:23:58 +0100

Robert Pluim <[email-masked]> writes:

>     Lars> I'm not sure I understand the rationale hre.  465 is defined as a TLS
>     Lars> port, so that's what Emacs should talk on that port.  It's like port
>     Lars> 443 -- it's also TLS.
>
> 465 is just a port. And eg
>
> (open-network-stream "google" nil "mail.google.com" 465)
>
> will attempt a STARTTLS connection (and incidentally hang my emacs
> :-)). You can override that by passing in :type tls, but in some
> situations you canʼt do that, hence the proposed patch.
>
> Unless youʼre suggesting that we unconditionally use tls for 465/443?
> Thatʼs another option, but itʼs sure to break someone's setup.

465 is a TLS port in an SMTP context, and 443 is a TLS port in an HTTP
context.  Outside those contexts, they're not anything in particular, of
course.

-- 
(domestic pets only, the antidote for overdose, milk.)
   bloggy blog: http://lars.ingebrigtsen.no