ipv6 PTR record; was: Re: Fwd: Bounce action notification
On Thu, 2 Jan 2014, Dave Neary wrote:
I looked up lists.ovirt.org, linode01.ovirt.org and ovirt.org on
SenderBase, and all have a good reputation... anyone more familiar with
mail spam handling who can intervene/investigate?
> "said: 550 Connections from the host Unknown
> (2600:3c01::f03c:91ff:fe93:4b0d), originating from SenderBase
As the message says, and I confirm, there is no ipv6 PTR
record. Wearing my ISP hat, we do not favor email lacking
such in our spamassassin rules, and I know that the US ISP
Comcast also down-rates / refuses email from hosts lacking
such
[herrold@centos-6 ~]$ host 2600:3c01::f03c:91ff:fe93:4b0d
Host
d.0.b.4.3.9.e.f.f.f.1.9.c.3.0.f.0.0.0.0.0.0.0.0.1.0.c.3.0.0.6.2.ip6.arpa
not found: 3(NXDOMAIN)
[herrold@centos-6 ~]$
I would start by getting it set
-- Russ herrold