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Troubleshooting Email Sending Issues with StackCP

Author:
cpcloudhosting

Published:

Updated on August 15, 2024

Reading Time: 2 min

Troubleshooting Email Issues #

Experiencing difficulties in sending emails can be frustrating. Here are some common reasons why you might encounter issues while using StackCP email hosting, along with solutions to help you resolve them.

Common Reasons for Email Sending Issues #

Incorrect Email Settings #

Ensure your email client is configured with the correct settings:

  • Account Type: IMAP
  • Incoming Mail Server: imap.stackmail.com
  • Outgoing Mail Server: smtp.stackmail.com
  • Incoming Server Port (IMAP): 993, with SSL encryption
  • Outgoing Server Port (SMTP): 465 (alternative: 587), with TLS encryption

For detailed setup instructions, refer to our guide on setting up a StackCP mailbox in your email client.

Email Sending Limits Reached #

StackCP enforces sending limits to maintain the mail platform’s reputation and prevent spam. Here are the key limits:

  • Web Servers: Limit of 500 emails per day.
  • Mailboxes: Up to 8,000 emails per day.
  • Message Size/Attachments: Accepts attachments up to 32MB; maximum message size is 50MB.

Exceeding these limits will prevent you from sending more emails. If you’re facing issues related to message size, consider reducing the email or attachment size.

MX Record Configuration #

Ensure that your MX records are correctly pointing to StackCP:

  • Use tools like MXToolbox to check your MX records.
  • If MX records are correctly set to mx.stackmail.com and issues persist, the problem might be elsewhere.

Mailbox Disabled for Suspicious Activity #

If your mailbox is disabled due to suspicious activity, you might see an error like:

  • SMTP Error (550): Failed to add recipient “test@example.com” (Sending mail from this address has been disabled due to suspicious activity).

In such cases, contact our Support Team to resolve the issue and reactivate your mailbox.

Conclusion #

Troubleshooting email sending issues involves checking your email settings, ensuring you haven’t hit sending limits, verifying MX records, and ensuring your mailbox hasn’t been disabled for suspicious activity. By methodically checking each of these areas, you can identify and solve the problem, restoring your ability to send emails.