You may want to try changing your .procmailrc file bounce.cgi line to as follows:
|/usr/bin/perl /home/jincomed/www/cgi-bin/bounce.cgi
If that fails, I wonder if this error could be caused by the system program /usr/bin/wget not being available. You may want to try an alternative in bounce.cgi, such as curl:
$http_program = "curl -o /dev/null " . $listmail_url . "/bounce.php";
Regards