Auteur: Peter Bowyer Datum: Aan: Exim User's Mailing List Onderwerp: Re: [Exim] Final Peer Review Sought: "Spam Filtering for MXs" HOWTO
Tor Slettnes <tor@???> wrote: > On Jul 12, 2004, at 05:35, Chris Edwards wrote:
>
>> Hence there are a growing number of sites which will blacklist
>> systems blindly attempting this sort of callout. Please think
>> carefully before recommending this.
>
> Ok, I will add a note of that sort.
>
> It is true that sender callouts are of limited use, since they only
> verify the validity, not the authenticity of the sender address. But
> out of curiosity, what is the issue/why are these sites being annoyed
> by the callout attempt?
If your domain is the victim of a joe-job, a storm of sender callouts is
indistinguishable from a storm of bounces.
Hope over to SPAM-L and ask Bruce Gingery, he'll write you a book on the
subject :-)
