Re: sendmail AUTH

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.

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.

br,
KK