List of IP Addresses Used by Zoho Mail within the CRM and also the New UI of Zoho Mail?

List of IP Addresses Used by Zoho Mail within the CRM and also the New UI of Zoho Mail?

Hi Admin,

I am repeatedly being blocked by a client and the email administrator wants to be sure so he can permanently whitelist emails coming from your server(s).   They show the IP address as 216.32.180.114.  Is this correct and is this the only one being used?

Thank you.

Kelly