Outgoing mails limit in Qmail - email

Question

I was googling and found this link helpful https://serverfault.com/questions/538233/qmail-limit-number-of-emails-sent-by-user-or-domain-per-hour
My OS is Centos with Plesk 11.x + Qmail
I tried my best to follow given directives in the link e.g.
1) I installed spamdkye successfully
2) Created mkdir -p /home/vpopmail/bin/qmail-antispam
3) mkdir -p /etc/qmailadmin/qmail-spam/blacklist
4) crontab -e
*/5 * * * * /home/vpopmail/bin/qmail-antispam >> /var/log/maillog 2>&1
5) I saved script as qmail-antispam as well as moved as blacklist but on both positions it displays:
Code:
# tail -f /var/log/maillog | grep "qmail-antispam"
/bin/sh: /home/vpopmail/bin/qmail-antispam: is a directory
/bin/sh: /home/vpopmail/bin/qmail-antispam: is a directory
Tue Oct 20 12:55:01 CDT 2015 qmail-antispam : Revisando logs
Tue Oct 20 12:55:01 CDT 2015 qmail-antispam : Fin de revision
Tue Oct 20 13:00:01 CDT 2015 qmail-antispam : Revisando logs
Tue Oct 20 13:00:01 CDT 2015 qmail-antispam : Fin de revision
Questions:
Please advise where:
1) where I save this script either in /etc/qmailadmin/qmail-spam/blacklist or /home/vpopmail/bin/qmail-antispam and with which name?
2) MAX_CORREOS=3000 //is that to set maximum limit??
ID_SERVER="ID_SERVER" //May I change this to my server hostname??
CONTACTO=admin#gmail.com //Here I set admin email to send report. Is that right??
Please advise
Thanks in anticipation

Answer 1

vi /home/vpopmail/bin/qmail-antispam
copy & paste the script provided in Link
Edit script and change following:
MAX_CORREOS=100
ID_SERVER="my server hostname"
CONTACTO=admin#gmail.com
# chown root /home/vpopmail/bin/qmail-antispam
# chmod 755 /home/vpopmail/bin/qmail-antispam
and check its working fine:
# tail -f /var/log/maillog | grep "qmail-antispam"
Wed Oct 21 19:20:01 CDT 2015 qmail-antispam : Revisando logs
Wed Oct 21 19:25:01 CDT 2015 qmail-antispam : Revisando logs
Wed Oct 21 19:30:01 CDT 2015 qmail-antispam : Revisando logs
Wed Oct 21 19:35:01 CDT 2015 qmail-antispam : Revisando logs
Wed Oct 21 19:40:01 CDT 2015 qmail-antispam : Revisando logs
Wed Oct 21 19:45:01 CDT 2015 qmail-antispam : Revisando logs
Wed Oct 21 19:50:01 CDT 2015 qmail-antispam : Revisando logs
Wed Oct 21 19:55:01 CDT 2015 qmail-antispam : Revisando logs
Wed Oct 21 20:00:01 CDT 2015 qmail-antispam : Revisando logs