See section 37 of the specification (specifically 37.10):
http://www.exim.org/exim-html-4.10/doc/html/spec.html
It sounds like you want an ACL with "verify = recipient/callout".
----- Original Message -----
From: <jwsacksteder@???>
To: <exim-users@???>
Cc: <jwsacksteder@???>
Sent: Monday, April 07, 2003 9:01 AM
Subject: [Exim] recipient verification
> I recently switched to Exim 4.x and cannot get my recipient verification
> working. This is becoming an issue, since I have Exim configured as a
> bidirectional smarthost at the perimeter of my network. No local delivery
is
> done.
>
> I need it to verify addresses with my internal Exchange server before
> accepting delivery. I see 'receiver_verify = true' no longer works with
4.x
>
> What is the configuration option for this?
