Unauthorized external email sent from my Outlook account

Question

My Outlook.com account had external emails sent using my address without an authenticated login.

No suspicious logins are currently present.

After deletion, the message reappears automatically.

I need:

1. Investigation of Send-As / delegated abuse
2. Purge of the stuck / ghost message from the mailbox backend

Please escalate to Exchange Online support.

Answer 1

Disclaimer: I noticed that your language setting is pt-BR and that your request was submitted in English. For consistency and clarity, I will continue responding in English. The information provided has been translated using an automated translation tool; while we strive to ensure accuracy, the translation may not fully reflect the original content’s meaning, context, or intent.

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Hi Nikolas Xanthidis,

Thank you for reaching out to Microsoft Q&A forum.

Based on the information you provided, please follow the steps below to contact Microsoft Support for further investigation of this incident.

• Go to Contact – Microsoft Support.
• Search for “Unauthorized email sending” in the search box.
• Click “Get Help” and press Enter.
• Navigate to “Contact Support.”
• For product/service, select "Other Products."
• For category, choose "Manage Account Security."
• Look for and select "Chat with a support agent in your web browser" or a similar callback option.
• Clearly explain your situation

Please note that this is a user-to-user support forum. Moderators, contributors including external Microsoft employees cannot directly intervene in Microsoft product features or access back-end systems. Our role is limited to providing technical guidance on reported issues, requests, or ideas only.

Thank you for your understanding.

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