Your message wasn't delivered because the recipient's email provider rejected it.SummaryGetting an email back from the Email Server with the following message: Delivery has failed to these recipients or groups: {instancename}@service-now.comYour message wasn't delivered because the recipient's email provider rejected it. (Remote Server returned '550 5.7.520 Access denied, Your organization does not allow external forwarding) Resolution This error is related to the "Email account" on the External Network, forwarding the received message to the ServiceNow instance. The error is caused by the "Email Account" not having enough privileges to forward the messages to an Email addressexternal to the customers' domain. This issue will need to be investigated and Resolved by the Client side Email Administrators.