Trend Micro - Securing Your Journey to the Cloud Business
Support
Sign In with your
Trend Micro Account
Need Help?
Need More Help?

Create a technical support case if you need further support.

Incoming emails are rejected and "550 5.7.1 Message rejected as spam by Content Filtering" error appears in Hosted Email Security (HES)

    • Updated:
    • 7 Jan 2015
    • Product/Version:
    • Hosted Email Security 1.9.8
    • Hosted Email Security 2.0
    • Platform:
    • N/A N/A
Summary
Inbound emails are not delivered in HES and when you check the MTA backend logs you see the following error message:
550 5.7.1 Message rejected as spam by Content Filtering
Details
Public
The issue occurs when the sender has another third-party antispam solution that prevents HES to send the email to the final recipient.
To resolve the issue, configure the third-party antispam solution and whitelist the HES IP addresses. For more information, refer to the following KB article: Accepting emails coming only from Hosted Email Security (HES) server.
The error is also generated if the Content Filtering in Microsoft Exchange. For more information, refer to the following Microsoft topic: 550 5.7.1 Message rejected as spam by Content Filtering.
Premium
Internal
Rating:
Category:
Troubleshoot
Solution Id:
1105955
Feedback
Did this article help you?

Thank you for your feedback!

To help us improve the quality of this article, please leave your email here so we can clarify further your feedback, if neccessary:
We will not send you spam or share your email address.

*This form is automated system. General questions, technical, sales, and product-related issues submitted through this form will not be answered.

If you need additional help, you may try to contact the support team. Contact Support

To help us improve the quality of this article, please leave your email here so we can clarify further your feedback, if neccessary:
We will not send you spam or share your email address.

*This form is automated system. General questions, technical, sales, and product-related issues submitted through this form will not be answered.
Related Articles