Your message can't be delivered because you do not have permissions to send to this email address.

Dear All , 

I would to change this DSN message but I tried but cannot fix so that I would request to help in this regards.

"Your message can't be delivered because you do not have permissions to send to this email address. Ask the recipient’s e-mail administrator to grant you permissions and then try again. For more information about this issue see DSN code 5.7.1 in Exchange Online.

Thanks