@Gilles Chehade
don't know if they're good reasons but there's already 465/tcp for smtps
I think Paul Smith already clarified that part. So yes we have SMTPS right
now only for submission. Not for the relay. That's what this proposal is
all about.
ISPs usually block port 25 to prevent outgoing email spam (direct-to-mx).
That's one of the reasons why we introduced port 587 for submission (e.g.
iPhone mail app to gmail). Port 465 is the secure version of port 587. If
we use the port 465 as secure alternative to port 25, then we are
introducing the same (direct-to-mx) problem again. So we need a new
unallocated port.
Three days back when I prepared my proposal for uta working group, it had
all that port history information. To simplify the document, I removed
<https://gist.github.com/mistergiri/a4c9a5f1c26fd7003ebc0652af95d314/revisions>
the smtp history related content.
I just created a new github gist and added back that content.
https://gist.github.com/mistergiri/16314f21077d1f0aaa6e3a66ee0fabe2
Hope someone find that useful. Let me know if I'm wrong somewhere or missed
something.
Thanks
On Tue, Jan 8, 2019 at 6:39 PM Richard Clayton
<richard(_at_)highwayman(_dot_)com>
wrote:
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In message
<9e5c4dd8-7acf-8da7-4d4e-9337ef6e6101(_at_)pscs(_dot_)co(_dot_)uk>, Paul Smith
<paul(_at_)pscs(_dot_)co(_dot_)uk> writes
A simple TXT record saying "This domain's MTAs support STARTTLS (and,
possibly, optionally, this is the certificate fingerprint)" would seem
useful and not need anything else, and would protect against STARTTLS
downgrade for any sender willing to support it.
doesn't RFC 8461 provide what you wish for ?
- --
richard Richard Clayton
Those who would give up essential Liberty, to purchase a little temporary
Safety, deserve neither Liberty nor Safety. Benjamin Franklin 11 Nov 1755
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Best Regards,
Viruthagiri Thirumavalavan
Dombox, Inc.
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