setting cronjobs

Hello team,
I am setting cronjobs in my hosting.
I had enter my email, and create the cronjobs.
common settings: every 5 minutes, and
command: /usr/bin/wget -O /dev/null "http://www.freecybers.com/index.php?option=com_easyblog&task=cron";
Every 5 minutes any email sent to my email above.

--2013-11-25 01:20:01-- http://www.freecybers.com/index.php?option=com_easyblog&task=cron
Resolving http://www.freecybers.com... 69.195.124.103
Connecting to http://www.freecybers.com|69.195.124.103|:80... connected.
HTTP request sent, awaiting response... 200 OK
Length: unspecified [text/html]
Saving to: `/dev/null'

0K 9.70M=0s

2013-11-25 01:20:02 (9.70 MB/s) - `/dev/null' saved [81]

but in backend report email still pending.

anybody know the problems?

Thanks