Xserver VPSでDebianサーバ構築/IMAPサーバ設定

概要

次の表のとおりである。

IMAPサーバ

Dovecot

設定

$ sudo apt install dovecot-imapd

• /etc/dovecot/conf.d/10-master.conf

service imap-login {
  inet_listener imap {
    #port = 143
  }
  inet_listener imaps {
    port = 993
    ssl = yes
  }

service auth {

  # Postfix smtp-auth
  unix_listener /var/spool/postfix/private/auth {
    mode = 0666
  }

• /etc/dovecot/conf.d/10-mail.conf

mail_location = maildir:~/Maildir

• /etc/dovecot/conf.d/10-ssl.conf

ssl_cert = </etc/letsencrypt/live/mail.example.com/fullchain.pem
ssl_key = </etc/letsencrypt/live/mail.example.com/privkey.pem

メールフィルタ

$ sudo apt install dovecot-sieve

/etc/postfix/main.cf

mailbox_command = /usr/lib/dovecot/deliver -f "$SENDER" -a "$RECIPIENT"

$ sudo systemctl reload postfix@-

/etc/dovecot/conf.d/15-lda.conf

protocol lda {
  # Space separated list of plugins to load (default is global mail_plugins).
  mail_plugins = $mail_plugins sieve
}

ユーザ設定

~/sieve/dovecot.sieve

require "fileinto";

if address :is "From" "logwatch@example.com"
{
  fileinto "logwatch";
}

ln -s sieve/dovecot.sieve .dovecot.sieve