Emails not being received - Delivery Status Notification (failure)

Emails not being received - Delivery Status Notification (failure)

Hello,

I have just set up my three new Zoho business accounts and have also added two onto my iphone through exchange.

When I use my personal hotmail account to test my new zoho emails by sending them an email, I keep getting the DSN message of failure from postmaster to my hotmail inbox.

Are you able to help please?  I have no idea what other settings I must change to fix this?  My email is linked to my domain.

Thank you kindly :)

Nikki