バージョンの確認

Postfix

$ postconf | grep mail_version
mail_version = 3.3.2
milter_macro_v = $mail_name $mail_version
Dovecot

$ dovecot --version
2.3.4 (0ecbaf23d)
テストメールの送信

$ gnu-mail aaaa@gmail.com
Cc:
Subject: Test
May/17/2017
Cntrl + D で終了

$ mail aaa@gmail.com
Subject: Test
May/17/2017
.

# newaliases


/etc/postfix/main.cf

home_mailbox = Maildir/

$ mail -f ~/Maildir


$ nmap localhost

Starting Nmap 7.40 ( https://nmap.org ) at 2017-05-17 20:32 JST
Nmap scan report for localhost (127.0.0.1)
Host is up (0.000089s latency).
Other addresses for localhost (not scanned): ::1
rDNS record for 127.0.0.1: localhost.localdomain
Not shown: 996 closed ports
PORT     STATE SERVICE
22/tcp   open  ssh
25/tcp   open  smtp
80/tcp   open  http
3306/tcp open  mysql

Nmap done: 1 IP address (1 host up) scanned in 0.08 seconds
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Jan/13/2019 AM 08:15