Web SUBpages rejected with "Bad hostname"

I've been seeing for a while that, although I can use the validator just 
fine on upper level pages on my website, certain pages get this:
>
> Sorry! This document can not be checked.
> 1. I got the following unexpected response when trying to retrieve 
> <http://www.talisman.org/~erlkonig/img/>:
>    500 Can't connect to dont-waste-bandwidth-running-validator-here:80 
> (Bad hostname 'dont-waste-bandwidth-running-validator-here')
>    If you made recent changes to your domain name (DNS) configuration, 
> you may also want to check that your domain records are correct, or 
> ask your hosting company to do so.
Of course, the validator was perfectly happy with other pages under the 
same http://www.talisman.org/~erlkonig/ - and the 
"dont-waste-bandwidth-running-validator-here" is obviously quite 
deliberate to catch some kind of abuse, but the error message as a whole 
is wrong both for intent (the webpage in question is far smaller than 
others the validator is fine with) and content (the problem has nothing 
whatsoever to do with my IP address and A/PTR mappings, which are fine.

Is this a feature that misfiring?

Received on Tuesday, 16 August 2011 12:38:12 UTC