On Wed, Jan 09, 2008 at 08:41:26PM +0100, Alessandro Vesely wrote:
That said, I believe making reject-on-SPF-fail a MUST is a bad idea, [...]
And recipients who have whitelisted all forwarders are very interested to
make that distinction.
How can a recipient whitelist all forwarders? That seems a daunting task,
and requiring it may hinder setting up new mail servers.
If 'X' is the original sender, and 'Y' is to where a mail was sent,
and 'Z' is where mail eventually ends up:
Y knows whereto it forwards mail. The same person should, at Z, make
sure Y is whitelisted.
And maybe X->Y->Z is not the only path. Perhaps there's also P->Q->Z,
as well as A->B->Z.
Now Y,Q,B are all forwarders to be whilelisted by Z. I think that
is what Michael ment.
Alex
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