Okay, so why would one ever do a sender callout rather than just *always*
doing a header_sender callout?
And am I missing a FAQ somewhere that explains the finer details of
callouts?
Steve
>
> As an example think about this list. The address <exim-users@???>
> is never ever used to send mail (mail going to you will instead have a
> sender address of <exim-users-bounces+...@exim.org>), so attempting a
> call out verify of the address will cause the following:-
> MAIL FROM: <>
> 250 OK
> RCPT TO: <exim-users@???>
> 550 "Recipient never sends mail so cannot cause bounces"
>
> If you are trying to do call out verification of this address then
> either:-
> 1. You received a forged message in the first place (so its not my
> problem).
> 2. You are extracting addresses from headers (so thats your
> problem).
>
> Nigel.
