You can follow the below steps:


1) Login to your EMM panel

2) Click on Admin->Account Configuration 

3) Click on Edit against Image Hostin Domain.

4) Enter the image hosting sub-domain in the text box. Please note the A record for the sub-domain should point to 202.162.244.9, i.e. the A record for img.yourdomainname should point to 202.162.244.9

Example:  Point the A record for the img.netcore.co.in to 202.162.244.9


 

5) Click on Save