I'm not getting Renoard's posts, but I have to disagree with his assessment of the situation. RE is not just an alias to TWG.
www.readingexcuses.com is a 301 redirect to this forum; all the MX records point to google. A DNS check produces this:
Your MX records that were reported by your nameservers are:
1 aspmx.l.google.com 74.125.43.27 (no glue)
5 alt1.aspmx.l.google.com 74.125.155.27 (no glue)
5 alt2.aspmx.l.google.com 74.125.155.27 (no glue)
10 aspmx2.googlemail.com 74.125.43.27 (no glue)
10 aspmx3.googlemail.com 72.14.213.27 (no glue)
10 aspmx4.googlemail.com 209.85.229.27 (no glue)
10 aspmx5.googlemail.com 74.125.157.27 (no glue)
Now, I don't generally give Google a lot of credit here (I really don't like them for anything but basic searches), but I'm pretty sure their system is set up right. They have millions of users, after all. I talked to Chaos about this, and got the forward for your email. It looks like your mail server tried contacting a Google server that is NOT hosting RE's records (74.125.95.27). To me, this looks like either opentransfer.com has stale DNS records, or they're getting magical data that's grossly wrong. Either way, it's not anything on RE's side.
Also, the system RE is using is just an alias redirect to send out to all addresses on the list. It is not a true listserv.