Continued:

Continued:
- some trolls managed to flood gserver with useless URLs. They can be blocked
  by domain blocking them, but still it floods gserver table with dead entries
- this hack tries to change that so they won't enter gserver at all. Let's hope
  these trolls as `activitypub-trolls.cf` learn a lesson (and get adults soon)

Signed-off-by: Roland Häder <roland@mxchange.org>