Re: [exim] Help with multiple condition ACL needed

(On-list please....)

On 19/12/06, Exim User <exim3@???> wrote:
> Funny.

No, not funny - since the DATA ACL is run once per message, there's no
guarantee of a unique value for the destination domain - there could
be many.

> What are others doing to achieve this?

Many things

- you can implement a RCPT ACL which captures the first destination
domain in a $acl_m variable for use in the DATA ACL, and then defers
recipients after the first one;

- more subtly you can defer subsequent recipients which don't have
the same destination domain as the first

- even more subtly, you can defer subsequent recipients which don't
have the same reject preferences as the first (ie 2 or more domains
might have the same preferences, so you can let them both through)

Many small-to-medium sites can get away with one of these without any
noticiable hit on overall mail throughput.

> Temporarily I installed a system filter. Is there a better way?

Better done in ACLs so you can deny rather than bounce/blackhole.

Peter

--
Peter Bowyer
Email: peter@???