cPanel temporarily suspends email sending if a domain sends too many undeliverable emails within a certain period. This happens because the system has a limit on the number of undelivered emails allowed within a given timeframe. When this limit is reached, cPanel temporarily stops the domain from sending more emails to prevent further issues.
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What Does This cPanel Error Mean?
When a domain tries to send too many emails that cannot be delivered within an hour, cPanel blocks it from sending more emails. This appears as an error message, such as the one below, which you can find in the Track Delivery tool in cPanel.
Domain example.com has exceeded the max defers and failures per hour (10/10 (100%)) allowed. Message discarded.
Signs You Are Experiencing This Issue
- You are unable to send emails from your email accounts.
- You receive an email indicating that your message could not be delivered, like the error message above.
How to Resolve It
- Use the “Track Delivery” Tool in cPanel: This tool helps you locate and delete outdated email addresses that are no longer in use.
- Check for Hacking Attempts: Look for any unusual activity in your email account and change your password if necessary.
- Add a Security Feature Called Captcha: This helps prevent unauthorized access to your email forms.
- Resolve Rejected Emails: If your emails are rejected by the recipient’s email server, ask them to contact their service provider. Stop sending emails to this address for the time being.
Shared hosting clients should be aware of email usage limitations. It’s essential to monitor and restrict email activity strictly for professional purposes, avoiding activities such as bulk emailing.
If you are experiencing email issues, consider reaching out to our support team for assistance.
If you find that the email sending limit on your shared hosting plan is no longer sufficient due to your growing needs, it may be time to consider a more robust alternative: upgrading to a dedicated server.
A dedicated server provides more resources and flexibility for managing your emails and online activities. With a dedicated server, you can increase the number of emails you can send and benefit from improved performance, which can be particularly advantageous if you need to handle a high volume of email correspondence or process many messages.