Re: [exim] support for domainkeys

On Thu, 2004-09-23 at 22:57 +0200, David wrote:
> well, when you fake RS0+xx+yy+abused.net+victim@??? no bounce
> will reach victim@??? as a) comcast does not implements srs and
> rejects the bounce with a 'unknown user' or b) comcast implements srs
> and rejectes the bounce because it has detected that that srs envelope
> sender was not generated by them. In all cases the victim will not
> receive the bounces generated by forged messages, nor it's server will
> be collapsed dealing with the bounces.

It's it's undeserved bounces you want to get rid of, SPF doesn't help
much either -- there really aren't that many people rejecting mail for
an SPF 'fail' result, because they'd have too many false rejections that
way.

If you want to stop receiving bounces to mail you didn't send, try
SES/BATV. You don't need anybody else to participate for that; you don't
need the whole world to upgrade.

--
dwmw2