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From: Wolfgang Agnes <wagnes@jemoni.to>
Newsgroups: comp.mail.sendmail
Subject: Re: sendmail AUTH
Date: Sat, 09 Nov 2024 17:22:01 -0300
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kalevi@kolttonen.fi (Kalevi Kolttonen) writes:

> Wolfgang Agnes <wagnes@jemoni.to> wrote:
>> Thanks!  I don't know how to investigate it further after I type
>> STARTTLS.  I believe that after I issue STARTTLS, I'd have to speak the
>> TLS protocol, which I don't know how.
>
> Please install a perl-based tool called "swaks". From the manual page:
>
> Swaks - Swiss Army Knife SMTP, the all-purpose SMTP transaction tester
>
> and then use its "-tls" option.
>
> With swaks, all SMTP testing becomes very easy indeed.

Pretty useful.  Thanks!

>> By the way, I think you're thinking is good---you might be thinking that
>> sendmail wouldn't want credentials traveling in the clear, but I believe
>> it does accept that if we compile it with AUTH PLAIN, say.  I think
>> saying STARTTLS before will not be required.
>
> You never *compile* Sendmail with "AUTH PLAIN", those are m4 configuration
> file options. 

Point taken.  On the other hand, we could perhaps call the process of
writing the sendmail.cf file as a certain compilation?  Because we read
a file that seems to be written in a certain domain-specific language
and then a program writes the sendmail.cf, which looks like a
lower-level type of language. :)