Re: [Exim] How to do SMTP AUTH on a smarthost?

ISP List wrote:

> I am using a cluster of Exim 4.x machines to front-end my main mailhost,
> which never appears in the MX records for the domains I handle mail for
> (the exim boxes do all the mail processing and then passes it on to the
> main mailhost via a smart route). At the moment, our users send out/relay
> mail through the main mailhost which runs CommuniGate Pro. I want to shift
> this duty to the exim boxes. The problem is that no local accounts exist
> on the exim boxes, so I need a way to handle SMTP AUTH for those folks that
> are not on our trusted IP blocks. I suspect I'll need to use an ACL, but
> I'm not sure how to do some sort of callback or something to CommuniGate
> Pro for SMTP AUTH.

Run an ldap server or something on the communigate pro machine? Or at
least dump to flatfile and rsync it over, build a berkeley db / cdb to
authenticate from?

    srs