It would be great to have the ability to see what SpamAssassin is actually doing. For example, as a server administrator I am interested in:
  • How many spam mails are deleted at runtime?
  • How many mails are being marked as spam?
  • Which addresses receive most spam emails?
  • How many spam mails are intercepted on a day to day basis (graph)

Apart from this, I really thing the Exim stats could use a big touchup. Statistics are barely readable, especially when log lines are a bit long. The graphs are also not too well readable and there is no way to select a daterange. It would be nice to have filtering options in these statistics screens, so that we can - for example - filter out all mail statistics for a single domain.