Modifying Domain Name
Cronjob are used for scheduling tasks to run on the server. They're most commonly used for automating system maintenance or administration.
If your cron server is called from a web browser, like cron.php, you would need to edit this cron.php file from your site. Go to your EasyDiscuss files, and locate this file: /components/com_easydiscuss/cron.php and at line 18, you will find this code. You would need to change the host name site.com to your site respectively.
##################################################
######## Configuration options.
##################################################
// This should not contain http:// or https://
$host = 'site.com';
##################################################
Save this file and you may proceed with configuring your cronjob.