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Re: Mandatory STARTTLS ?

From Marco Moock <mm@dorfdsl.de>
Newsgroups comp.mail.sendmail
Subject Re: Mandatory STARTTLS ?
Date 2026-01-30 07:38 +0100
Organization A noiseless patient Spider
Message-ID <20260130073854.5dcab3d5@ryz.dorfdsl.de> (permalink)
References <10lgddc$1ud8$1@gal.iecc.com>

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On 29.01.2026 19:45 Uhr John Levine wrote:

> The other group says there are still corner cases where plain text is
> useful, e.g., dusty printers saying they're out of paper, or mail to
> postmaster telling him that his cert has expired, and if you want to
> mandate TLS on your own system, you have MTA-STS and DANE.

There are many machines that don't support it or only support only
ciphers that current OS versions don't support. Some of them are rather
new.

> What do you think?  Any chance sendmail would completely remove
> non-STARTTLS mail?

I hope not, as that means old versions will be kept to support the old
(and sometimes expensive) devices.
IIRC you can actually configure sendmail to only accept mail with
startls, see DAEMON_OPTIONs etc.

-- 
kind regards
Marco

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Mandatory STARTTLS ? John Levine <johnl@taugh.com> - 2026-01-29 19:45 +0000
  Re: Mandatory STARTTLS ? Claus Aßmann <INVALID_NO_CC_REMOVE_IF_YOU_DO_NOT_POST_ml+sendmail(-no-copies-please)@esmtp.org> - 2026-01-30 00:57 -0500
  Re: Mandatory STARTTLS ? Marco Moock <mm@dorfdsl.de> - 2026-01-30 07:38 +0100

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