[CentOS-docs] Short postgrey guide?

[Alain Reguera Delgado]

On 12/17/07, Ned Slider <nedslider at f2s.com> wrote:
> Hi Guys,
...

Could we add the following image:
http://wiki.centos.org/HowTos/postgrey?action=AttachFile&do=get&target=postgrey-en.png

I found the article very clear and easy to read. I would like to thank
you with this image, if it helps of course. If some modification is
needed, tell me please, I will be glad to fix it.

Cheers,
al.