rules: IP Address in To: expression reports Config Error

[Joachim Holzfuss]

Hi,

I was under the impression from reading the examples and README files
located in the rules directory
that I can setup a highscore spam policy based
on a receiving mailserver specified like

To: IP.AD.DR.ESS delete

This works for From: but not for To: or FromOrTo:
Instead I get in the logs:
Config Error: Cannot match against  destination IP address
when resolving configuration option  "highscorespamactions.rule"

Is this intended or not yet needed by someone else?
Greetings
Joachim