etc/cron.daily/clean.quarantine

#!/usr/bin/perl


#
# IMPORTANT NOTE:
#
# Change the next line to 0 instead of 1 to enable this script.
# By default it will be disabled and will not do anything.
#

#$disabled = 0;



$quarantine_dir = '/var/spool/MailScanner/quarantine';
days_to_keep   = 7;

exit if $disabled;

 cron.daily]#  ./clean.quarantine
Can't modify constant item in scalar assignment at ./clean.quarantine line 16, near "7;"
Execution of ./clean.quarantine aborted due to compilation errors.

days_to_keep   = 7;

should be

$days_to_keep   = 7;