> No links
> from other sites/other servers/other domains.

The default (external depth=0 or blank) means stay on the site. You can also
check No external pages and you'll get a warning page if you click on a not
mirrored link.

Note that most links are redirects not external links. On page
<http://www.testweb.com/search.php?d=testweb.com&cachekey=1241738882&rc=true&term=Flow+cytometry&append>=
the top "Flow Cytometry" redirect to <http://www.cellsciences.com> via
<http://www.testweb.com/redirect.php?b=PT%2BwxPH%2FQfY%3D&term=Flow+cytometry&nterms=RmxvdyBjeXRvbWV0cnk%3D&position=2&domain=testweb.com&source=1&market=us&currency=USD&to=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%3D>

Httrack should download the redirect.php and stop at the redirect. If it
doesn't the filter out the redirect.php