[vcf-midatlantic] MIME format

[Systems Glitch]

> Received: from www.mailmanlists.us ([2604:3400:dc1:43:216:3eff:fe36:d305])
>         by mx.google.com with ESMTP id v129si2644061qka.16.2015.11.04.16.17.36;
>         Wed, 04 Nov 2015 16:17:37 -0800 (PST)
> Received-SPF: softfail (google.com: domain of transitioning
> vcf-midatlantic-bounces at lists.vintagecomputerfederation.org does not
> designate 2604:3400:dc1:43:216:3eff:fe36:d305 as permitted sender)

Looks like you need an `ip6:` IPv6 record for SPF. I'm guessing you should put a v6 network/prefix in there, since www.mailmanlists.us seems to be in the middle of an existing range.

IPv6...it's out there...and people are using it!

Thanks,
Jonathan