Re: Using sendmail as outbound MTA, but with SSL

From: Marco Moock <mm_at_dorfdsl.de>
Date: Sun, 21 Dec 2025 09:45:37 UTC
Am 19.12.2025 um 08:47:17 Uhr schrieb Matthias Apitz:

> When I'm in Cuba, connected via data mobile to the cuban cellphone
> network, they block outbound port 25 traffic, for whatever reason

To avoid that hacked end user's devices can act as a spambot.

> and I have to bypass sendmail with a configuration in mutt to send
> mails to smtp.1blu.de:465

The port can be changed, but I dunno is implicit TLS can be enabled for
the esmtp mailer, as sendmail is an MTA and MTAs are not designed to
talk to the submission service.
You might ask that in comp.mail.sendmail.

Running stunnel would be an easy option.

-- 
Gruß
Marco

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