Common Email Issues and Solutions
Email problems can be frustrating, but most issues have straightforward solutions. This guide covers the most common email sending and receiving problems and how to resolve them.
Cannot Send or Receive Email
If email is not working at all, check these items first:
- Verify your credentials - Log in to webmail to confirm your username and password are correct.
- Check server settings - Ensure your email client has the correct server, port, and encryption settings.
- Check DNS records - Verify that your domain's MX records point to the correct mail server.
- Check disk quota - If your mailbox or account is full, new messages cannot be delivered.
Emails Going to Spam
If your outgoing emails are landing in recipients' spam folders:
- Check SPF record - Ensure your domain has a valid SPF record that includes your mail server's IP. Example:
v=spf1 a mx ip4:YOUR.SERVER.IP ~all - Check DKIM - Verify that DKIM signing is enabled for your domain in DirectAdmin.
- Check DMARC - Add a DMARC record to improve email authentication. Example:
v=DMARC1; p=none; rua=mailto:dmarc@yourdomain.com - Check blacklists - Use tools like
mxtoolbox.comto check if your server's IP is on any email blacklists. - Avoid spam triggers - Do not use excessive capitalization, exclamation marks, or spam-like phrases in your emails.
Cannot Connect to Mail Server
If your email client cannot connect:
- Verify the server hostname or IP address is correct.
- Check that you are using the correct ports (993 for IMAP, 995 for POP3, 587 for SMTP).
- Ensure the correct encryption method is selected (SSL/TLS for IMAP/POP3, STARTTLS for SMTP).
- Check if your ISP or network is blocking email ports. Try connecting from a different network.
- Temporarily disable any firewall or antivirus software that may be interfering with email connections.
Email Bouncing Back
If you receive bounce-back messages (NDR/DSN), the error code indicates the cause:
- 550 User not found - The recipient's email address does not exist. Check for typos.
- 552 Mailbox full - The recipient's mailbox is over its storage quota.
- 554 Rejected - The message was blocked by the recipient's spam filter or security policy.
- 421 Too many connections - Temporary issue. Retry sending later.
When contacting support about email issues, provide the full bounce-back message or error details, the sender and recipient email addresses, and the approximate date and time of the issue. This helps us diagnose the problem quickly.
If your server's IP has been blacklisted, sending email may be disrupted until the listing is removed. Contact our support team for assistance with blacklist delisting requests.