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Email forwarders is a convenient way to receive messages from multiple addresses in a single inbox. However, when forwarders are incorrectly configured, they can unintentionally cause emails to be flagged as spam or rejected entirely by recipient mail servers. This is because forwarded emails often fail modern email authentication checks such as SPF, DKIM, and DMARC.
As global email providers continue tightening their security policies to combat spam, phishing, and spoofing, improperly configured forwarders have become one of the most common causes of delivery failures. This guide explains why forwarded email can trigger spam filters, how to prevent these issues, and how to safely manage forwarders using cPanel on Hosted.com®.
TABLE OF CONTENTS
How to Managing Email Forwarders in cPanel
1. Login to your Hosted.com® client area using your registered email address and password.
2. From the dashboard, locate the hosting service associated with the domain where email forwarding is configured, and click Manage.
3. Select Login to cPanel to access your hosting control panel.
4. In the cPanel interface, scroll to Email and click Forwarders.
5. Review the full list of active forwarders, paying close attention to destinations that point to external email providers such as Gmail, Outlook, or Yahoo.
6. For any forwarder that is no longer required, click Delete, confirm the removal, and ensure no business-critical mail flow depends on it.
7. If a forwarder is required, verify that the destination mailbox is actively monitored and able to receive authenticated mail.
8. Avoid creating new forwarders unless completely necessary and consider mailbox access via IMAP as a safer alternative.
Why Email Forwarders Trigger Spam Filters
- SPF failures: When an email is forwarded, it is resent from a server that is not authorized in the original sender’s SPF record, causing recipient servers to treat the message as suspicious.
- DKIM signature breaks: Some forwarders modify message headers, which can invalidate DKIM signatures and cause authentication to fail.
- Strict DMARC policies: If the original sender’s domain has a DMARC policy set to quarantine or reject, forwarded emails that fail SPF or DKIM checks are more likely to be blocked.
- Reputation mismatch: The forwarding server’s IP reputation may differ from the original sending server, increasing the likelihood of spam filtering.
Best Practices to Prevent Spam Issues
- Use mailbox access via IMAP instead of forwarding where possible.
- Ensure SPF, DKIM, and DMARC are correctly configured for your domain.
- Avoid forwarding email to free providers that enforce strict DMARC rules.
- Remove unused or legacy forwarders that are no longer required.
Additional Information
- Email forwarders resend messages without preserving original authentication headers, which increases the likelihood of spam filtering by strict mail servers.
- Forwarded emails often bypass server-side spam filtering, allowing malicious or unwanted messages to reach destination inboxes.
- Forwarders provide no message storage or logging, making troubleshooting delivery issues significantly more difficult.
- High volumes of forwarded mail can negatively affect your domain’s sending reputation.
- Some receiving providers silently discard forwarded messages without issuing a bounce notification.
- Forwarding loops can occur when two domains forward mail to each other, resulting in excessive server load.
- Accessing mailboxes directly via IMAP preserves authentication, improves reliability, and offers better long-term control.
Login to Hosted.com® Account
1. Go to the Hosted.com® website Account Login page.
2. Enter your Email and Password and click the Sign In button.
3. You will see the Hosted.com® Dashboard, displaying the Manage Account menu on the left and your Account Information, Account Overview and Open Support Tickets on the right.
Login to cPanel from your Hosted.com® Dashboard
4. Click on Manage Services to view the sub-dropdown menu and select the hosting package for the domain you want to work with – in our example we are using WordPress Hosting.
5. Click the Manage button to the right of the domain name you want to access.
6. The display will now show Product Information, Quick Manage, Resource Usage and Site Statistics for that domain name.
7. Under Product Information, scroll down to Control Panel, which will display cPanel to the right, and click on the Login button.
8. The cPanel Dashboard will now be displayed.
