ddaas a écrit :
> I did the modification and it seems it work better. Since that
> modification I got no message rejected from yahoo.
>
> 1. Could you please explain to me why should the RBL checks be done
> before Sender Address Verification? And why it is not advisable to do
> SAV at all?
>
> 2. It is correct that my server received spams with forged yahoo address
> and for every spam it responded to yahoo and yahoo got upset?
>
There was a recent thread about this. look for
Subject: reject_unverified_sender vs greylisting
(initial post: 9 Feb 2009).
postfix docs already say a little about this:
http://www.postfix.org/ADDRESS_VERIFICATION_README.html#limitations
if you like reading, take a look at:
http://www.circleid.com/posts/sender_address_verification/
http://en.wikipedia.org/wiki/Callback_verification#Drawbacks
http://taint.org/2007/03/16/134743a.html
http://www.spamresource.com/2007/01/whatever-happened-to-vrfy.html
