CPanel Email Problems
Introduction
No matter how user-friendly cPanel is, email users occasionally run into technical issues, whether related to sending, receiving, or messages being flagged as spam. In this article, we cover the most common of these problems along with practical, step-by-step solutions, so you can save time and avoid losing important messages.
1. Not Receiving New Messages
Possible Causes:
- Mailbox storage quota is full.
- An issue with the domain’s MX record in DNS.
- Messages are being classified as spam and routed to a different folder.
Solution:
1. Check your storage usage in Email Accounts and increase the quota if needed.
2. Verify that your MX record is correct via Zone Editor — it should point to your actual mail server.
3. Check the Spam folder in Webmail to make sure messages aren’t landing there by mistake.
2. Outgoing Messages Failing to Send
Possible Causes:
- Incorrect SMTP settings in your mail client.
- The “Authentication” option isn’t enabled in your account settings.
- You’ve exceeded the daily sending limit allowed by your hosting plan.
Solution:
1. Verify your SMTP settings (server, port, encryption) via the Connect Devices page.
2. Enable “My server requires authentication” in your mail client.
3. Check the Email Deliverability log or contact your hosting provider to confirm you haven’t exceeded your sending limit.
3. Outgoing Messages Landing in Recipients’ Spam Folders
Possible Causes:
- Missing or incorrect SPF, DKIM, and DMARC records.
- The message content contains suspicious words or links.
- The server’s IP reputation is low with major mail providers.
Solution:
Review our article on email security (SPF, DKIM, DMARC) to make sure your records are configured correctly, and avoid using exaggerated wording in subject lines like “100% Free!!!” or suspicious shortened links.
4. Forgotten Email Password
Solution:
1. Log in to cPanel using your main hosting account (not the email account itself).
2. Go to Email Accounts.
3. Next to the relevant account, click Manage, enter a new password, and save the changes.
5. Mailbox Storage Filling Up Quickly
Solution:
1. Delete old messages or unnecessary large attachments.
2. Empty the Sent and Trash folders regularly.
3. If your plan allows, increase the allocated quota from the Email Accounts page.
4. If using POP3, enable local archiving of old messages instead of leaving them on the server.
6. Unable to Connect via a Mail Client (Outlook/Thunderbird)
Solution:
1. Make sure the username is entered correctly (it should be the full email address, not just the part before the @).
2. Confirm the server and port settings match what’s shown on the Connect Devices page.
3. Check that your device’s firewall isn’t blocking the mail ports being used.
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Frequently Asked Questions (FAQ)
