Re: [Exim] Final Peer Review Sought: "Spam Filtering for MXs…

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?

-tor