Jay, you need to have SPF records for your domain. This will prevent the spoofing you are seeing.
http://en.wikipedia.org/wiki/Sender_Policy_Framework $ dig @8.8.8.8 baylink.com TXT ; <<>> DiG 9.8.3-P1 <<>> @8.8.8.8 baylink.com TXT ; (1 server found) ;; global options: +cmd ;; Got answer: ;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 11443 ;; flags: qr rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 1, ADDITIONAL: 0 ;; QUESTION SECTION: ;baylink.com. IN TXT ;; AUTHORITY SECTION: baylink.com. 194 IN SOA localhost. jra.baylink.com. 2011032901 28800 14400 86400 600 ;; Query time: 39 msec ;; SERVER: 8.8.8.8#53(8.8.8.8) ;; WHEN: Mon Feb 11 13:36:33 2013 ;; MSG SIZE rcvd: 78 Sean On 2/11/13 8:19 AM, Jay Ashworth wrote: > Clearly, someone has decided to shoot at me specifically, since this > latest spam supposedly from me: > > ===== > Received: from lpb01.clearspring.com ([206.165.250.240] > helo=lpb01-a.clearspring.local) > by sc1.nanog.org with esmtp (Exim 4.80 (FreeBSD)) > (envelope-from <em...@addthis.com>) id 1U4vc3-000Cq4-9q > for nanog@nanog.org; Mon, 11 Feb 2013 15:48:11 +0000 > Received: from lpb01.clearspring.local (localhost [127.0.0.1]) > by lpb01-a.clearspring.local (8.14.4/8.14.4) with ESMTP id r1BFm5bG022255 > for <nanog@nanog.org>; Mon, 11 Feb 2013 10:48:05 -0500 > Date: Mon, 11 Feb 2013 10:48:05 -0500 > From: j...@baylink.com > To: nanog@nanog.org > Message-ID: > <57414784.191289.1360597685530.JavaMail.brainiac@lpb01.clearspring.local> > ===== > > is also about FTTH. > > FOR THE RECORD: I don't ever use "send this link to someone", and especially > not to a mailing list; this isn't even my tenth rodeo. > > Cheers, > -- jr 'DoS attack? What's that?' a
