[Exim] Running external programs during ACL.

Hi all,

Is it possible to create a condition in an ACL where an external program
will be run? I'm not referring to anti-virus or anti-spam software, I
want to do some statistics, and rather than parse the log file every N
minutes, why not call an external program when the condition is met.
The actual message will never reach the external program, as it will
just update a DB for those stats.

-- Steve