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How to Troubleshoot Missing No-Reply Emails After Microsoft 365 Migration
Question details
The user needs to investigate why automated no-reply emails are missing after migrating a custom domain mailbox from GoDaddy to Microsoft 365.
- Product
- Microsoft 365
- Device & OS
- not provided
- Scenario
- Post-migration email delivery troubleshooting for a custom domain.
- Observed behavior
- Automated and no-reply emails fail to arrive in the user's Microsoft 365 inbox after the domain migration process is completed.
Ensure you have Microsoft 365 Exchange Administrator privileges to run message traces, and ask the sender for the exact recipient address and the approximate sending time.
Run a Message Trace in the Exchange Admin Center
Use the message trace tool to track incoming emails and identify if they were blocked, quarantined, or misrouted by Microsoft 365.
A message trace allows administrators to follow email messages as they travel through your Exchange Online organization. This is the most effective way to determine whether an email reached Microsoft's servers and what happened to it afterward.
Log in to the Microsoft 365 admin portal with your administrator credentials, expand the left menu, and select 'Exchange' to open the Exchange Admin Center.
In the left-hand navigation pane, click on 'Mail flow' and then select 'Message trace'.
Click 'Start a trace'. Enter the missing no-reply email address in the 'Senders' field, set the time range to cover when the email was expected, and click 'Search'.
Review the trace results. Look for the delivery status: if it says 'Delivered', the email is in the user's mailbox (check Junk folders). If it says 'Failed' or 'Quarantined', click the entry to view detailed error codes.
Review Quarantine and Anti-Spam Policies
Check if Microsoft 365 Defender's security filters mistakenly blocked the automated emails as spam or phishing attempts.
Verify Domain and MX Record Configuration
Ensure the GoDaddy to Microsoft 365 migration successfully updated your domain's DNS records, specifically the MX record required for mail routing.
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Frequently Asked Questions
Why would only no-reply emails fail while standard emails are delivered after a migration?
Automated systems sending no-reply emails often utilize strict SPF, DKIM, or DMARC validation. If your new Microsoft 365 environment has strict incoming spam filters, or if the sender's DNS records are not optimized, the automated messages may be flagged and dropped by Exchange Online Protection.
How long does it take for MX records to update after a GoDaddy migration?
DNS changes, including MX record updates necessary for email routing, typically take anywhere from 1 to 24 hours to fully propagate across the global internet. During this transition window, incoming emails might still route to the old GoDaddy server or get lost.
What does it mean if a message trace returns absolutely no results?
If an email doesn't appear in the Exchange admin center message trace, it means the message never reached the Microsoft 365 environment. The issue is likely on the sender's side (failing to send) or a DNS/MX record issue preventing the email from finding your new server.
Who should I contact if mail flow issues persist after checking settings?
If you originally purchased Microsoft 365 through GoDaddy, they manage your administrative tenant and you should contact GoDaddy support for DNS or migration assistance. If you migrated away from GoDaddy to a direct Microsoft subscription, contact Microsoft Support via the admin center.
