I thought this was pretty interesting so I just tested this by setting up a Perl script that pretends to be a web server and having it printing out the IPs of a

I thought this was pretty interesting so I just tested this by setting up a Perl script that pretends to be a web server and having it printing out the IPs of anyone who accesses it while feeding them a 403 page. After emailing myself a link to that server on Gmail, referencing a document that doesn't exist, I waited for over six hours. No hits were recorded from any source and I am unable to duplicate your results.