My emails are going to junk for other office 365 users.

Question

Hello

Please i need your help on this issue.

My emails are going to junk for other office 365 users. I have configured DKIM, SPF and DMARC as well.

 

Can you please guide me or suggest what might be going wrong here?

Answer 1

Hello, @IniobongNkanga-8038,

Welcome to the Microsoft Q&A platform!

Andy David - MVP is right, if possible, getting relevant information from the recipients of your email is key to helping resolve the issue. They can check the Microsoft Defender decision and pass on the email header to further diagnose the problem. Here are the steps recipients and you can take:

1.Check Defender Verdicts: Recipients use the Microsoft Defender Security Center (security.microsoft.com) to see if there are any alerts or verdicts related to your emails. They can navigate to "Threat Tracker" and look for any entries related to your domain or IP address.

2.Copy Email Headers: Recipients open the email that went to the junk folder and forward the full email headers to you. These headers contain valuable information about the email's journey and any issues that might have occurred during delivery. You can use tools like Message Header Analyzer to decode and analyze the headers.

3.Analyze headers: You can look for specific fields in the headers such as X-Forefront-Antispam-Report, X-Microsoft-Antispam, and Authentication-results. These fields contain information about spam, phishing, and other threat detections. For details, please refer to https://learn.microsoft.com/en-us/defender-office-365/message-headers-eop-mdo.

4.Whitelist Your Domain: If possible, the recipient's IT department can add your domain to their safe senders list. This can help ensure that your emails are not marked as junk in the future.

By analyzing these details and following these steps, you might be able to pinpoint the exact cause and take corrective action.

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Thank you for your support and understanding.

Best Wishes,

Alex Zhang