Dave Lugo, 2010-07-03 16:09:
> This is my complete acl for auth, nothing
> else needed in it:
>
> acl_check_auth:
>
> #
> # The following rules force auth to require STARTTLS.
> #
> accept encrypted = *
> deny message = TLS encryption required
I would strongly recommend against this. This does not stop Exim from
announcing that AUTH PLAIN is supported, so clients would send AUTH
PLAIN together with their login information, e.g. "AUTH PLAIN
AGZvbwBiYXI=", so it's too late to reject it.