Re: Performance Issues - PTR Records

[Matthew Palmer <mpalmer () hezmatt org>]

On Wed, Nov 02, 2011 at 06:12:21PM -0400, David Hubbard wrote:
> From: Matt Chung [mailto:itsmemattchung () gmail com] 
> > Historically, there was no compelling reason to create PTR 
> > records for our CPE however more and more applications seem
> > to be dependent on it.  Although we will be assigning a
> > record for each address, my question is why
> > is the application (specifically HTTP) dependent on a reverse record ?
> > What is the purpose?
>
> As a web host, we frequently find customers who have
> added Apache rules to their ecommerce sites to block
> undesirable traffic, such as credit card scammers, etc.
> Not knowing any better, they often do this by just
> blocking anything that ends in .in to block Indonesia
> for example.

That's even less effective than you'd naively expect, given that Indonesia's
TLD is .id...

- Matt