Re: "Header Reordering", yet again

At 12:05 PM 5/31/2005 -0400, Valdis(_dot_)Kletnieks(_at_)vt(_dot_)edu wrote:
> On Tue, 31 May 2005 17:19:41 +0200, Frank Ellermann said:
> > Arnt Gulbrandsen wrote:
> >
> > > just use DomainKeys to sign the Received-SPF header field ;)
> >
> > Try `nslookup -q=mx` and find the corresponding header fields,
> > for an environment where they arrive out of order.
> >
> > In an environment where these headers are only sometimes added,
> > _and_ arrive out of order, _and_ a spammer finds the way where
> > they are not added, _and_ the spammer forged a PASS you lose -
> > or you ask your postmaster to fix it.
>
> Identifying conclusively that headers were added out of order is problematic
> when not everybody runs NTP or other timesync.
I would accept as proof two messages, one sent directly to the receiver, 
the other through the forwarder, both identical going in.
--
Dave
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