Unable to ping smtp.zoho.in from AWS EC2 instance

Unable to ping smtp.zoho.in from AWS EC2 instance

Hi,

I am unable to use smtp.zoho.in in my WHMCS application.
After some findings, i figured our i am unable to ping smtp.zoho.in, where as i can able to ping smtp.google.com.

*All ports in aws security group are open when i try this.

Help me out, its really urgent.