> www.zonadecaos.com
> 
> But I think that the webmaster of the site has
> disalowed the downloading by changing the robot.txt
> or adding httrack in the httpd.conf

Neither of the above. You can simply enter www.zonadecaos.com/robots.txt into
the browser to see (it is plural.)

If you look at the page source, you would see that all the links are absolute
to zonadecaos.com not www.zonadecaos.com so httrack by default will not mirror
an external site.

Either mirror zonadecoes.com instead or add a filter +zonadecoes.com/*