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List:       exim-users
Subject:    Re: [exim] authenticated smtp-transport?
From:       "John W. Baxter" <jwblist () olympus ! net>
Date:       2004-08-31 20:16:03
Message-ID: BD5A2A93.1589E%jwblist () olympus ! net
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On 8/30/2004 14:41, "Stephen Gran" <steve@lobefin.net> wrote:

> On Mon, Aug 30, 2004 at 09:53:38PM +0200, Olaf Föllinger said:
> > On Mon, Aug 30, 2004 at 09:26:26PM +0200, Olaf Foellinger wrote:
> > > I'm trying to connect to an Exchange server which is configured to use
> > > encryption and authentication. I get the error message
> > > 
> > > 2004-08-30 21:22:49 I39XBN-0001D4-MO == of@sesa.de R=send_to_smart_host
> > > T=remote_smtp defer (-42): authentication required but no common
> > > mechanisms were found
> > > 
> > > How do I find out which mechnisms are supported by the server?
> > 
> > O.k., I've found out by adding all mechanisms that are documented. The
> > server uses LOGIN.
> 
> The simplest would be to just ask what is offered, for example:
> 
> steve@gashuffer:~$ nc mail 25
> 220 mail.lobefin.net ESMTP Exim 4.34 Mon, 30 Aug 2004 17:40:19 -0400
> ehlo me
> 250-mail.lobefin.net Hello www.lobefin.net [216.158.52.108]
> 250-SIZE 52428800
> 250-AUTH LOGIN PLAIN
> 250-STARTTLS
> 250 HELP

By all means, start that way.

BUT, a machine *may* offer something different after one starts a TLS
session than before.  (For instance, an admin may elect not offer PLAIN and
LOGIN outside a TLS session, although that can make working with older
Outlook versions "troubling".)  I'm not clever enough to start a TLS session
from the keyboard.  ;-)

  --John

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