Can you add an external IP to Peplink DNS

Hello,

Can i check, i am using 2 PEPLINK 305 at this point with 2 different ISPs with different IPs, of coz some servers such as mail will be ‘load balanced’ and can respond to the corresponding NAT IPs… assuming a url: https://mail.xyz.com may respond to IP A or IP B

Assuming that i have a 3rd remote site and would like to add this ip to https://mail.xyz.com to be in the PEPlink DNS entries of the peplink is this possible? Assuming is that in the the 3rd site respond assuming NAT into server will not work , it will point over to the 3rd IP at the remote site.

Thank you.