How to Install Dovecot for IMAP and POP3

Dovecot handles incoming email retrieval via IMAP and POP3 protocols.

Install

apt install dovecot-imapd dovecot-pop3d -y

Basic Configuration

Edit /etc/dovecot/dovecot.conf:

protocols = imap pop3\nlisten = *

Authentication

Edit /etc/dovecot/conf.d/10-auth.conf:

disable_plaintext_auth = yes\nauth_mechanisms = plain login

Start

systemctl restart dovecot\nsystemctl enable dovecot

Firewall

ufw allow 143/tcp  # IMAP\nufw allow 993/tcp  # IMAPS\nufw allow 110/tcp  # POP3\nufw allow 995/tcp  # POP3S