I'll note in the headers for the forged message:
Received: from pglaf.org ([127.0.0.1])
by localhost (mail.pglaf.org [127.0.0.1]) (amavisd-new, port 10024)
with ESMTP id q3dJbRQr1ULg for ;
Wed, 21 Sep 2016 03:57:34 -0700 (PDT)
X-Greylist: delayed 905 seconds by postgrey-1.34 at mail;
Wed, 21 Sep 2016 03:57:33 PDT
Received-SPF: Softfail (domain owner discourages use of this host)
identity=mailfrom; client-ip=195.128.120.25; helo=mail05.parking.ru;
envelope-from=juan.g71@gmail.com; receiver=cypherpunks@lists.cpunks.org
Received: from mail05.parking.ru (mail05.parking.ru [195.128.120.25])
by pglaf.org (Postfix) with ESMTP id A35D611C0539
for ; Wed, 21 Sep 2016 03:57:33 -0700 (PDT)
Received: from web38 [195.128.121.111] by mail05.parking.ru with SMTP;
Wed, 21 Sep 2016 13:41:59 +0300
The originating smtp relay server was apparently mail05.parking.ru. The
Received-SPF (presumably from pglaf.org, the cypherpunks list host) grey listed
the message due to an SPF fail, instead of rejecting the message, which would
have prevented this message from being distributed to the list.
On 09/21/16 16:10 -0300, juan wrote:
I didn't send the message quoted below, so I'm wondering how
the spoofing was done this time...
Sean Lynch: > Of course, this is all unglamorous work > that's hard
to get volunteers to do > unless they're really passionate Or getting
paid, fucker.
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Dan White