[AusNOG] IPv6 reverse DNS and Mail ...

[Noel Butler]

On Mon, 2013-05-20 at 14:07 -0700, Mark Smith wrote:

> 
> How is lack of PTR an absolute and unquestionable indicator that email from that source is spam?
> 


Nothing in life in absolute, but its a fair chance that someone who
wants their mail to succeed, will give a damn and know there is more to
it than installing mail daemons and chucking an IP on a box, if you
can't even get something as simple as DNS right, what else have you f'd
up.


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