You forgot to mention one thing: It is important that the cpan testers reports have the verbose test output. Otherwise, the authors will have a hard time interpreting the results and fixing their bugs. I have even heard a prominent CPAN contributor say that testers reports without verbose output are useless.
You can turn on verbose test output using the environment variable HARNESS_VERBOSE. After following xdg's steps, just run cpan as follows:
HARNESS_VERBOSE=1 cpan
Or on win32:
set HARNESS_VERBOSE=1
cpan
Best regards,
Steffen