[SGVLUG] I can't send email (but now I can).

[John E. Kreznar]

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David Lawyer <dave at lafn.org> writes:

> I couldn't send email ...

> ... checking showed that they had been refused by my ISP due to lack
> of authentication (failed TLS ?).

Authentication.  TLS on top of that is recommended by LAFN but
optional.

Are you using exim4 or an earlier version?

A friend uses a pre-exim4 version on Linux with LAFN and I got drafted
to help him accommodate the new LAFN authentication requirement.  What
LAFN is demanding is SMTP-AUTH.  They're also recommending TLS, but
it's apparently not required.  Indeed, my friend got past the June 1
deadline and is still sending mail with SMTP-AUTH but without TLS.
The key was to add an "authenticator" stanza to /etc/exim/exim.conf
per the exim specification, and to get the correct SMTP host at LAFN.
(He had been sending to the wrong host there for a year and they were
happily accepting it!)

Let me know if you would like more detail.  It's here somewhere in my
email to him.

> ... had to use exim in debug mode.

So did we, and after the stanza was added, we could see the successful
authentication negotiation.

- -- 
 John E. Kreznar jek at ininx.com 9F1148454619A5F08550 705961A47CC541AFEF13
  Some folks need to be able to see what they're doing, and
   can't safely operate if there's a GUI blocking the view.

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