Spamhaus recommendations

Just saw this:

There were a few new things I learned in this article, and one feature request I’d like to make based on it. Can we have an automated summary of the log activity they mention? Specifically a weekly summary of total SMTP mail counts and fraction of them which were undelivered, this could help admins keep an eye on things.

Sure. Please open an issue on github with exactly what you think would be useful.