This whole thing runs in Perl on your server... there is no mechanism by which it could not function exactly the same way
every single time.
And the way the message is being generated and sent by your server, what you describe is impossible... if the original message is being sent, then the Cc: was sent... it's really the same source message.
It's far more likely the Cc: email address has been misspelled or the messages are being caught by a spam filter someplace.
What kind of testing have you done so far?
Also, why did you not have the courtesy to follow-up on your other thread?
http://forum.unitedwebcoders.com/index.php/topic,1247.0.html