[checklink] How to override robots.txt?

Hello!

We want to use checklink to search for broken links on our site. Of
course there should be only a warning mail when something went wrong.
Unfortunately this is also true when external links are disallowed by a
robots.txt.

Is it possible to override or disable the robots.txt-feature? If not,
how can I prevent checklink to list these adresses as errors when using
"-q"?

TIA
 Stephan