When deploying Defend to Microsoft 365, there are potential issues that may arise. These issues can prevent Defend from functioning correctly, leading to email delays or failures. It is essential to troubleshoot these issues promptly and efficiently to ensure successful deployment.
This article highlights the common issues that may occur when deploying Defend to Microsoft 365 and how to manage them.
Mail Flow Issues
This issue occurs when there is a problem with the mail flow within Microsoft 365 at the time of the Defend deployment. This deployment may cause significant problems with correctly processing emails, resulting in a blocked mail flow to your organization.
Resolution
To resolve this issue, check the mail flow configuration in Microsoft 365 to ensure it is correct. Verify that your mail flow rules are configured correctly and that there are no issues with email transport. Rerun the health check on the Defend console's Settings page to ensure that the issue is resolved. If the issue persists, contact support for further assistance.
Microsoft Propagation
This issue occurs when Microsoft 365 is still in the process of propagating the changes made during the Defend deployment. This issue can cause delays in the deployment process and may prevent Defend from functioning correctly.
Resolution
To resolve this issue, wait for a short period of time, typically 30 minutes, to allow Microsoft 365 to complete the propagation process. Rerun the health check on the Defend console's Settings page to ensure that the deployment has been completed successfully. If the issue persists, contact support for further assistance.
Mail Flow Rule Order Issue
This issue occurs when the mail flow rules in Microsoft 365 are not in the correct order. This issue can prevent emails from being processed correctly and bypassing Defend.
Resolution
To resolve this issue, check the mail flow rules in Microsoft 365 and ensure they are in the correct order. Move the Defend mail flow rules to the top of the list to ensure they are applied first. Rerun the health check on the Defend console's Settings page to ensure that the issue is resolved. If the issue persists, contact support for further assistance.