@hainj
If you are receiving spam messages from internal users within your Microsoft 365 environment, there could be a few possible reasons for this issue. Here are some factors to consider and steps to troubleshoot the problem:
- Compromised User Accounts:
- One possibility is that attackers who are sending spam emails from their accounts have compromised the internal users’ accounts.
- Advise the affected users to change their passwords immediately to secure their accounts.
- Enable multi-factor authentication (MFA) for all user accounts to add an extra layer of security.
- Spoofed Emails:
- Spammers may be using techniques to spoof the email addresses of internal users, making it appear as if the spam emails are coming from within your organization.
- Implement SPF (Sender Policy Framework), DKIM (DomainKeys Identified Mail), and DMARC (Domain-based Message Authentication, Reporting, and Conformance) to help prevent email spoofing and increase email authentication.
- Internal Email Policy:
- Review your organization's email policies to ensure they are properly configured.
- Check if there are any gaps in the email filtering and security measures in place.
- Adjust the email filtering settings and policies to enhance protection against spam messages.
- User Awareness and Training:
- Educate users about email security best practices, such as not clicking on suspicious links or opening attachments from unknown senders.
- Train users to identify and report spam emails using the appropriate mechanisms in your organization (e.g., reporting to IT or using an email reporting system).
- Review Email Protection Services:
- Evaluate the effectiveness of your organization's email protection services.
- Consider using advanced threat protection solutions or third-party email security services to enhance your defenses against spam and phishing emails.
- Investigate the Spam Emails:
- Analyze the content and characteristics of the spam messages you are receiving.
- Look for common patterns, such as specific keywords, sender domains, or message structures.
- Use message trace and logs in Microsoft 365 to track the source and path of the spam emails.
- Report the Issue to Microsoft Support:
- If the issue persists and you cannot resolve it internally, consider opening a support case with Microsoft to get further assistance and guidance.
- Provide them with details about the spam messages, any analysis you have conducted, and any relevant logs or information you have gathered.
By following these steps, you can troubleshoot and address the issue of receiving spam messages from internal users within your Microsoft 365 environment. It is crucial to take swift action to mitigate the impact and prevent further spam emails from reaching your mailbox. The text and the steps was created with the help of AI.
Hope this will help you.
