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How to Fix the Invalid Notification Address Error in Exchange Message Trace

Olivia Miller Oct 19, 2026 868 views

Question details

The user needs to resolve an error preventing them from receiving Exchange message trace reports due to an invalid notification email address.

How to Fix the Invalid Notification Address Error in Exchange Message Trace

Product: Microsoft Exchange
Device & OS: not provided
Scenario: Running an extended message trace in the Exchange admin center and setting an email address to receive the generated report.
Observed behavior: An error message appears stating that the notification address is invalid or does not belong to an accepted domain.

Before you start

Ensure you have Exchange administrator permissions in your Microsoft 365 tenant to access the Exchange admin center and manage accepted domains.

Solution 1Recommended

Verify and Update Accepted Domains in Exchange Admin Center

Check if the domain used for the notification email is officially recognized by your Microsoft 365 tenant.

Microsoft Exchange requires that any email address configured to receive message trace reports belongs to a verified 'Accepted Domain'. If you enter an external address or an unverified domain, the system will reject it.

Access the Exchange Admin Center

Navigate to Accepted Domains

In the left-hand navigation menu, click on 'Mail flow' and then select 'Accepted domains'.

Verify the domain

Look through the list to confirm that the domain of your intended notification email address is present and marked as accepted.

Update the notification address

If the domain is not listed, either change your notification email address to one that uses an accepted domain, or add the new domain to your Microsoft 365 tenant settings.

Verify and Update Accepted Domains in Exchange Admin Center

Domain Verification: Once the correct domain is used, you can successfully run the trace without the invalid address error.

Solution 2

Create a Microsoft 365 Service Request

If the domain is correctly listed as accepted but the error persists, escalate the issue to Microsoft Support.

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Frequently Asked Questions

Why does Exchange require an accepted domain for message trace notifications?

Microsoft Exchange requires an accepted domain to ensure that potentially sensitive message trace reports are only sent to verified internal domains, preventing accidental data leaks to external parties.

Can I send message trace reports to an external email address?

Generally, no. Notification addresses for message trace reports must belong to a verified accepted domain within your Microsoft 365 tenant. Using external addresses will usually trigger the invalid notification address error.

How long does a message trace report take to generate?

A standard message trace for data within the last 7 days processes almost immediately. However, historical or extended message trace reports that are sent via email can take several hours to generate depending on the data volume.

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