Yesterday it happened:

For the first time since using Akismet, a spam comment came from the control.
Strangely it was one of these comments are the 20 lines long, contain 100 links and this is not a meaningful word.
I wonder what's gone wrong here.
But rather makes me wonder: Can I send spam to Akismet that somehow, these outliers expand its database by somehow? Is there a kind of report function for this plug-in?
If I find time I'll be there researching it enough times but currently only for these lines.

This ends up more Akismet spam-packed days with a success rate of over 94%, many thanks and congratulations.
hannes schurig akismet spam statistik klein Akismet: 1. Ausfall nach 480 Spams