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@xxxxxxxxx is > 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@diotima[lists.ietf.censored]; cat `egrep -l -i '^DKIM-Signature:' *` | egrep -i '^From:' | sort | uniq -c | wc -l 14 : leinen@diotima[lists.ietf.censored]; cat * | egrep -i '^From:' | sort | uniq -c | wc -l 114 -- Simon. _______________________________________________ Ietf@xxxxxxxx https://www1.ietf.org/mailman/listinfo/ietf