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When an email is rejected outright, it usually means the receiving server has applied a policy decision rather than having encountered a technical issue. These rejections often relate to spam prevention or authentication problems.
The SMTP Error 550 – Message Rejected by Server indicates that the receiving mail server has refused to accept the message. Unlike temporary errors, this response typically requires corrective action before delivery can succeed.
Spam filtering, authentication failures, or sender reputation issues are common contributors.
TABLE OF CONTENTS
How to Resolve SMTP Error 550
1. Review and configure SPF, DKIM, and DMARC records for the sending domain.
2. Check the message content for wording or formatting that may trigger spam filters.
3. Verify that the sending IP address and domain are not listed on any blacklists.
4. Ensure the From address matches the authenticated sending domain.
Additional Information
- SMTP Error 550 is a permanent failure indicating that the message was refused outright.
- Messages that are rejected with this error are not retried by the sending server.
- Spam filtering systems commonly issue this response when messages violate policy rules.
- Sender reputation strongly influences how receiving servers evaluate messages.
- Authentication failures often increase the likelihood of an Error 550 rejection.
- High bounce rates can negatively impact future email deliverability.
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.
