PTR records for IPv6

Erik Kline ek at
Wed Sep 4 06:22:02 CEST 2013

On 4 September 2013 13:17, Frank Bulk <frnkblk at> wrote:
> If an ISP assigned a /64 to their mail server, they could assign each
> customer a permanent unique IP on their MTA, perhaps hash-generated.  Every
> message could be traceable without the X-Authentication header. =)
> Frank

+1 to things you can only do in v6

More information about the ipv6-ops mailing list