On Thu, 5 Nov 2015, Evan Koblentz via vcf-midatlantic wrote:
Yesterday's messages about our headers + spam made me realize we were on to something. I called Jason H. and he determined that the txt record in our DNS settings -- the GoDaddy registrar side, not the mailing list side -- needed to have an IPv6 entry (vs only an IPv4) to properly synchronize. We made that change.
Jason will explain it better than I could.
If it seems to be fixed then we'll inform the list company.
dig lists.vintagecomputerfederation.org TXT
;; ANSWER SECTION: lists.vintagecomputerfederation.org. 3600 IN TXT "v=spf1 mx a ip4:173.246.104.112 ip6:2604:3400:dc1:43:216:3eff:fe36:d305 ~all" Mike Loewen mloewen@cpumagic.scol.pa.us Old Technology http://q7.neurotica.com/Oldtech/