清淨平等覺

https://www.vultr.com/docs/how-to-insta ... untu-20-04

$ sudo apt update
$ sudo DEBIAN_PRIORITY=low apt install postfix
$ sudo dpkg-reconfigure postfix

$ sudo apt install dovecot-imapd dovecot-pop3d dovecot-core
$ sudo apt install mutt

$ sudo ufw allow Postfix
$ sudo ufw allow 110,143,993,995/tcp

$ sudo nano /etc/dovecot/dovecot.conf
protocols = imap pop3

$ sudo postconf mail_spool_directory
mail_spool_directory = /var/mail

$ sudo nano /etc/dovecot/conf.d/10-mail.conf
mail_location = maildir:~/Maildir
mail_privileged_group = mail

$ sudo adduser dovecot mail

$ sudo nano /etc/dovecot/conf.d/10-auth.conf
disable_plaintext_auth = yes
auth_username_format = %n
auth_mechanisms = plain login

$ sudo nano /etc/dovecot/conf.d/10-ssl.conf

$ sudo nano /etc/dovecot/conf.d/10-master.conf
service auth {
unix_listener /var/spool/postfix/private/auth {
mode = 0660
user = postfix
group = postfix
}
}

$ sudo nano /etc/dovecot/conf.d/15-mailboxes.conf
auto = create
mailbox Trash {
auto = create
special_use = \Trash
}

$ sudo systemctl restart dovecot
$ sudo ss -lnpt | grep dovecot
$ sudo systemctl status dovecot
$ sudo systemctl restart postfix