Scott Talbert: > Okay, so I confirmed with Wireshark that my server is definitely using > 2607:f308:1:1::2 and not 2607:f308:1:1::212. In fact, I see this in part > of the exchange: > > 250-mx.google.com at your service, [2607:f308:1:1::2] > > So, it remains a mystery as to what that 12 means. Perhaps some sort of > code indicating why the message was rejected?
Thanks, so this appears to be thrash. Meanwhile I have dug up a three-year old solution to disable IPv6 for all domains hosted at Google, posted to a separate thread. Wietse