Email forwarders can unintentionally trigger spam filters when messages are resent from a different server than the original. This can cause legitimate emails to be flagged as spam or rejected entirely by receiving servers.
Proper configuration and authentication are essential to prevent forwarded email from being misidentified as suspicious or unauthorised.
TABLE OF CONTENTS
How to Prevent Forwarder-Related Spam Filters
1. Login to your Domains.co.za account.
2. Select the hosting service linked to the domain you want to check.
3. Click Manage, then login tocPanel.
4. Navigate to Email and select Forwarders.
5. Review all active forwarders and confirm they are still required.
6. Avoid chaining multiple forwarders together.
7. Ensure SPF, DKIM, and DMARC records are correctly configured.
8. Use mailbox rules instead of forwarders where possible.
9. Test email delivery after making changes.
Additional Information
- Forwarded emails often fail SPF checks because the forwarding server is not authorised to send on behalf of the original domain.
- DKIM signatures help preserve message integrity during forwarding, but may still fail under strict DMARC policies.
- DMARC enforcement can cause forwarded mail to be rejected if alignment requirements are not met.
- Using mailbox-based rules reduces the risk of authentication failures.
- Removing unused forwarders improves both security and deliverability.
- Regular testing ensures forwarders do not introduce unexpected issues.
Login to Domains.co.za Account
1. Go to the Domains.co.za website Account Login page.
2. Enter your Email and Password and click the Sign In button.
3. You will see the Domains.co.za Dashboard, displaying the Manage Account menu on the left and your Account Information, Account Overview and Open Support Tickets on the right.
