[vcf-midatlantic] Possible spam fix: DNS change

[Jason Howe]

On 11/05/2015 12:15 PM, Systems Glitch via vcf-midatlantic wrote:
>> There is still the small issue of the fact that www.mailmanlists.us
>> doesn't have a AAAA record or a ipv6 ptr record defined.  This also has
>> the potential to help get stuff caught up in spam filters, but that is
>> something they need to fix on their end.
> You may also need to specify a prefix, rather than a single address, for the IPv6 SPF record. Depends on if they really only have one outgoing server in the middle of an IPv6 subnet, or if there are in fact multiple machines there on different addresses and we've only seen the one so far.
>
> Thanks,
> Jonathan

Since we've only seen a single ipv4 address come through (the same *one* 
address that they told Evan to add to the SPF record), I'm inclined to 
think they're funneling all their outbound traffic through a single 
point.   I'm happy to stick with this assumption until presented with 
evidence to the contrary.

Regardless of our assumptions and feelings, when Evan talks to their 
support folks about this, it's certainly something he should ask.

--Jason