In Control WebPanel (CWP), your SMTP (outgoing) and POP3/IMAP (incoming) server settings are typically set to your server's hostname or mail subdomain.

Your SMTP server is mail.yourdomain.com and your POP server is mail.yourdomain.com 
SMTP settings MAY need to be set to match your ISP SMTP setting if mail.yourdomain.com does not seem to work.

Here are the standard settings for CWP, assuming you have set up your mail server (Postfix/Dovecot):

1. Default CWP Mail Settings

• Username: Your full email address (e.g., user@yourdomain.com)
• Password: The password you set for that email account in CWP
• Incoming Server (POP3): mail.yourdomain.com (or your server's hostname, e.g., server.hostname.com)
• Outgoing Server (SMTP): mail.yourdomain.com (or your server's hostname)

2. Required Secure Ports (Recommended)

You should use secure settings to ensure mail deliverability:

• POP3 SSL/TLS: Port 995
• IMAP SSL/TLS: Port 993
• SMTP SSL/TLS: Port 465 (recommended) or 587 (STARTTLS)

3. How to Find Your Exact Settings in CWP

1. Log in to the CWP User Panel (usually your-ip:2083 or 2082).
2. Navigate to Email Accounts in the left sidebar.
3. Click the Configure Mail Client button or look at the list of accounts to see the Mail Client Manual Settings.
4. If no SSL is configured, you may need to use non-SSL ports (110 for POP3, 25 or 26 for SMTP), but SSL is strongly recommended.

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