SES Email cannot receive email from Microsoft email or 365 Email

The issue you're experiencing with Amazon SES not receiving emails from Microsoft or Microsoft 365 email addresses, while successfully receiving from other providers like Google, is not a typical behavior of SES. Amazon SES should be able to receive emails from any email provider, including Microsoft, as long as it's properly configured.

To troubleshoot this issue, consider the following steps:

1. Verify your domain setup: Ensure that you have fully verified your domain with Amazon SES and published all required DNS records (such as TXT or CNAME) provided by AWS to your DNS provider.

2. Check MX records: Confirm that you have added the necessary MX record for email receiving. It should point to the correct SES inbound SMTP endpoint for your region (e.g., "inbound-smtp.[region].amazonaws.com").

3. Review receipt rules: Make sure you have set up and activated a receipt rule set in the Amazon SES console. Verify that your rules are configured to handle incoming emails for your domain without any restrictions that might inadvertently filter out Microsoft emails.

4. Verify region consistency: Ensure all SES-related resources (including S3 buckets or Lambda functions if used) are in the same AWS region as your SES endpoint.

5. Check for size restrictions: If you're using SNS to publish received emails, be aware that there's a 150 KB size limit. Larger emails will bounce, which could potentially affect some Microsoft emails if they exceed this size.

6. Test with a simple email: Try sending a basic text email from a Microsoft account to your SES-configured domain as a test.

7. Monitor for bounces or errors: Check for any bounce notifications or error messages that might provide more information about why the Microsoft emails are not being received.

If after checking these points you're still unable to receive emails from Microsoft addresses, it would be advisable to contact AWS Support for a more in-depth investigation. They can review your specific configuration and logs to identify any potential issues that might be causing this selective email reception problem.
Sources
SES receive email not working. | AWS re:Post
Emails not recieving to the sender domain in my PROD Amazon SES | AWS re:Post
Amazon SES inbound message could not be delivered | AWS re:Post