
If DNS is not configured or not configured properly, the call will fail responding with a 488 'Not Acceptable Here'. The IP address of the CPU interface will be displayed in the SDP cline.

The FQDN of the local IMG 2020 will be sent. Still need help? Go to Microsoft Community. The SIP Signaling has an FQDN entry but the CPU interface does not. In a hybrid scenario, Exchange Online must be set up correctly so that when a cloud-based user sends an email message to an on-premises user, Exchange Online routes the email message to the on-premises messaging environment.įor more information about accepted domains, see Accepted domains in Exchange Serverįor more information about hybrid deployment, see Exchange Server Deployment Assistant It lets you manage how messages are delivered. The Exchange admin center lists the domains that you added to your account through the Microsoft 365 portal. In the Accepted Domain window, in the This accepted domain is section, select Internal relay as the domain type.Select the domain that's set up for the hybrid deployment, and then select Edit.

Sign in to the Exchange admin center as a Global admin or Exchange admin.To fix this issue, set up the domain as an internal relay domain:

This occurs if the domain that's set up in the hybrid deployment isn't set as an internal relay domain in Microsoft 365. You have a Microsoft Exchange hybrid deployment in which cloud-based users in Microsoft 365 and on-premises users have the same email namespace (such as However, on-premises users aren't getting email messages from Microsoft 365 users.Īdditionally, when a Microsoft 365 user sends an email message to an on-premises user, the Microsoft 365 user receives a nondelivery report (NDR) error message that resembles the following:
