[Exim] Problem with frozen messages

Hi everybody

I'm running a big mail server at the ISP where I work. My main problem is
dealing with frozen messages. I've tried setting this:

timeout_frozen_after = 7d
auto_thaw = 24h

I guess it just stops trying to send them, but is there a way to delete
those frozen messages without having to go to the spool directories and
erase them manually ?.

I'm running Exim 3.33 (Solaris) on one server and 3.20 (Linux RedHat) on
another one.

Thanks in advance.

Lior Marantenboim.