On Sat, 9 Nov 2002, Rene Schumann wrote:
> Hello!
>
> Is it possible with exim3 to reject a mails with a temporary error instead of
> a permanent one if a RBL matches?
> This could be used for "to many invalid recipients from your IP" or so like
> yahoo does.
In exim3 you could add a warn-header if the RBL matches, and enforce the
defer while verifying the recipient.