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Re: "Header Reordering", yet again

2005-05-31 09:05:06
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.

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