Mailserver Configuration

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This set of features will let you configure the POP3 and IMAP protocols used by Courier and Dovecot. Courier and Dovecot are the 2 mail servers offered by cPanel.

• Configuring Courier — This set of options will be presented to you when you access the Mailserver Configuration screen while running the Courier mail server.
• Configuring Dovecot — This set of options will be presented to you when you access the IMAP configuration screen while running the Dovecot mail server.

Additional Documentation

• IMAP vs. POP3 — This document explains the fundamental difference between IMAP and POP3 lies in how and for how long mail is stored on the mail server.
• More about TLS/SSL — Transport Layer Security (TLS) and Secure Sockets Layer (SSL) are 2 cryptographic protocols used for secure communication between computers over the Internet. These protocols are most often used for email and web browsing. Essentially, they perform the same tasks.
• Require SMTP Authentication — SMTP authentication is supported and enabled by default in cPanel & WHM. Here, you can learn how to enable the authentication method POP before SMTP or how to require that SMTP authentication be used at all times.