Import Your Microsoft Email Domains and Review your Policy Configuration

When the setup wizard is complete, you will be on a Summary page for the wizard. Click Review policy to review your policy configuration. For information on policy settings, see Configuration Settings.

Secure Email Threat Defense imports domains with email capabilities from your Microsoft 365 tenant. Go to the Configuration > Mail flow configuration > Domains panel to import your domains so you can apply automated remediation to specific domains. Secure Email Threat Defense treats newly imported domains differently depending on whether you have the Unlisted domains setting on or off:

• If the Unlisted domains setting is Apply policy to domains not listed above, your policy is applied to any new domains that are imported.

• If the Unlisted domains setting is Do not apply policy to domains not listed above, your policy is not applied to any new domains that are imported.

By default, the Unlisted domains setting is set to Do not apply policy to domains not listed above. If you have chosen Microsoft 365 Read and Write as your message source and visibility, you should set this setting to Apply policy to domains not listed above as soon as you have imported your current domains.

See more:

1. Manual Import

2. Automatic Import