danorton Posted January 16, 2012 Share Posted January 16, 2012 This is nothing new, as people have complained about it for a long time, but to turn the problem on its head, if you want to send spam that can't be reported to SpamCop, put a line like this in the header: Received: from SYSVSERV-02.Intranet.SysMind ([fe80::c567:9a8a:75eb:ba0]) by SysVServ-02.Intranet.SysMind ([fe80::c567:9a8a:75eb:ba0%12]) with mapi id 14.01.0355.002; Mon, 16 Jan 2012 12:08:48 -0500 SpamCop can't process IPv6 headers and one might reasonably conclude that SpamCop should report the spam as if the line were not present, but this isn't how SpamCop works. Instead, it bails out and rejects the spam entirely. I'm completely stunned that the folks at SpamCop have been allowing this loophole for so long. Link to comment Share on other sites More sharing options...
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