Fred Baker writes:
On Oct 4, 2007, at 11:56 AM, Hallam-Baker, Phillip wrote:
The problem is the amount of time it is taking to moderate mail
sent by non subscribers.
yes. For example, every email from @cisco.com is dkim-signed. The
IETF can automagically dump any such email that is not signed, or for
which the signature doesn't check out. I know that fred(_at_)cisco(_dot_)com
one of many commonly-spoofed email addresses - I can tell that from
the backscatter I find in my junk box.
For how many of us is that true?
FWIW, about 12% (14 out of 114) of the active non-spam senders to this
list had DKIM-Signature headers in the past two weeks. I don't know
enough about DKIM to tell whether the same assumption holds for the
non-cisco.com sender domains (mostly gmail.com plus a few smaller
ones): that mail from them can be considered spoofed if the DKIM
headers are absent.
: leinen(_at_)diotima[lists(_dot_)ietf(_dot_)censored]; cat `egrep -l -i
'^DKIM-Signature:' *` | egrep -i '^From:' | sort | uniq -c | wc -l
: leinen(_at_)diotima[lists(_dot_)ietf(_dot_)censored]; cat * | egrep -i
'^From:' | sort | uniq -c | wc -l
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