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comcast ipv6 PTR
On 10/10/13 03:30, Constantine A. Murenin wrote:
> Yet, apparently, Google has very recently completely stopped accepting
> email with no PTR records.
They also don't try very hard to get the PTR record. If the packet is
lost, has a routing issue, or a DDoS prevents reliable access to the
name servers, you will also get emails hard rejected until it resolves
again. I'd always had correct rDNS so it took quite some head scratching
to figure out the hiccup.