how to define a catch-all in hobbit-alerts.cfg

I have rules defined for many of my 300+ hosts ( a mix of windows and unix servers scattered throughout, and interleaved across, multiple pages. I want to define a default rule for hosts so that, for example, every conn alert goes to my unix administrators. I have experimented with several solutions which do not yield the desired result. e.g.:

HOST=* EXHOST=<> # I can't explicitly list all hosts (too many) and tried macros consisting of wildcard host names MAIL ...

HOST=* EXHOST=<> MAIL ... UNMATCHED

if I use only HOST=* then I end up with multiple (sometimes redundant) recipients for some hosts and no recipients for hosts not previously explicitly defined.

Help?

thanks