[Exim] Exim 4 AUTH ACL

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Author: Matt Bernstein
Date:  
To: exim-users
Subject: [Exim] Exim 4 AUTH ACL
Hi,

I'm getting to grips with the ACLs in Exim 4. Generally, I think it's
lovely, but I want to require TLS for AUTH LOGIN and AUTH PLAIN (granted
it's a little late by then, but..), but to accept AUTH CRAM-MD5.

An ACL such as below won't work, as "authenticated =" isn't available to
the AUTH ACL. Is it possible for the AUTH ACL to know which mechanism is
being attempted?

Lovely.

Matt

--

acl_check_auth:

  accept  encrypted     = *


accept authenticated = cram-md5

  deny    message       = TLS required for cleartext AUTH