Re: Using sendmail as outbound MTA, but with SSL

On 21.12.2025 08:35 Matthias Apitz <guru@unixarea.de> wrote:

> El día domingo, diciembre 21, 2025 a las 10:45:37a. m. +0100, Marco
> Moock escribió:
> 
> > Am 19.12.2025 um 08:47:17 Uhr schrieb Matthias Apitz:
> > 
> >   
> > > 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.  
> 
> I was used to use USENET in the 90ties. Does comp.mail.sendmail still
> exist? 

Yes and one of the developers is also there. There are also free to use
usenet servers available.

> > Running stunnel would be an easy option.  
> 
> I've never used stunnel, only SSH and port forwarding. The IP addrs in
> question are

Should be simple to set up.

> Can I do such stunnel to route SMTP to 178.254.4.101:25 without
> involving my ISP before?

Yes, it opens a local unencrypted port and transports that to dst:465
with TLS.

> I'd even have to compile security/stunnel, but I checked, I can do
> this from here in Cuba with my FreeBSD netbook.

Most Linux distributions have that in their repo, a FreeBSD port
is available.

-- 
kind regards
Marco

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