[TriLUG] sendmail & ldap > exchange howto?

[Matt Pusateri]

mimedefang will do this and a bunch more.

Matt P.

On Wed, February 8, 2006 6:12 pm, Paul G. Szabady wrote:
> Folks,
>
> I'm running a RHEL 4.2 server w/sendmail (8.13) as a mail gateway.  I
> currently use a mailertable entry to forward email to an exchange
> server
> after some basic spam, av, and rbl filters.  The problem I'm facing is
> all
> the spam that gets by it which is destined for ficticious users gets
> bounced back to the gateway server.  (I'm not rejecting or discarding
> spam, just marking it.)  I'm getting 350 +/- NDA bounces a day!  I
> believe
> I can use Sendmail's built-in ability to perform LDAP queries for
> valid
> users (a.k.a. smtp addresses) in the active directory / exchange
> environment.  If I understand it correctly, this query takes place
> during
> the smtp layer and will bounce the email for unknown users immediately
> (from the gateway/linux server, rather than the current situation
> which
> lets the email into the exchange store and attempt to send a NDA to
> the
> sender, which is now my mail gateway.
>
> I've been looking around for a HOWTO, but can't seem to find one.
> Does
> anyone have any suggestions on where I might find a simple HOWTO?  I
> dread
> the thought of having to dig into the bowels of ldap to figure it if
> someone's already documented it.  ;(
>
> Thanks in advance!
>
> --
> Paul
> @ Thy Service
>
>
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