メールサーバの構築（２）sendmail の設定

sendmail パッケージのインストール

root@aws:~# apt-get install sendmail
Reading package lists... Done
Building dependency tree
Reading state information... Done
The following additional packages will be installed:
  libperl5.24 libsigsegv2 lockfile-progs m4 make perl perl-modules-5.24 procmail rename
  sendmail-base sendmail-bin sendmail-cf sensible-mda
Suggested packages:
  m4-doc make-doc perl-doc libterm-readline-gnu-perl | libterm-readline-perl-perl
  sendmail-doc rmail logcheck resolvconf sasl2-bin
The following NEW packages will be installed:
  libperl5.24 libsigsegv2 lockfile-progs m4 make perl perl-modules-5.24 procmail rename
  sendmail sendmail-base sendmail-bin sendmail-cf sensible-mda
0 upgraded, 14 newly installed, 0 to remove and 1 not upgraded.
Need to get 8,950 kB of archives.
After this operation, 46.2 MB of additional disk space will be used.
Do you want to continue? [Y/n] y
	:
	:
Creating /etc/mail/sendmail.cf...
Creating /etc/mail/submit.cf...
Informational: confCR_FILE file empty: /etc/mail/relay-domains
Warning: confCT_FILE source file not found: /etc/mail/trusted-users
 it was created
Informational: confCT_FILE file empty: /etc/mail/trusted-users
Warning: confCW_FILE source file not found: /etc/mail/local-host-names
 it was created
Warning: access_db source file not found: /etc/mail/access
 it was created
Updating /etc/mail/access...
Linking /etc/aliases to /etc/mail/aliases
Updating /etc/mail/aliases...
/etc/mail/aliases: 12 aliases, longest 10 bytes, 134 bytes total

Warning: 3 database(s) sources
        were not found, (but were created)
        please investigate.
Setting up sensible-mda (8.15.2-8) ...
Setting up sendmail (8.15.2-8) ...
Processing triggers for systemd (232-25+deb9u1) ...
root@aws:~#

sendmail の設定

sendmail.mc

root@aws:~# cd /etc/mail
root@aws:/etc/mail# mv sendmail.mc{,.orig}
root@aws:/etc/mail# cp sendmail.mc{.orig,}
root@aws:/etc/mail# vi sendmail.mc
root@aws:/etc/mail# diff -u sendmail.mc{.orig,}
--- sendmail.mc.orig    2017-12-25 19:27:05.501929251 +0900
+++ sendmail.mc 2017-12-25 19:48:32.113192971 +0900
@@ -54,9 +54,9 @@
 dnl #
 FEATURE(`no_default_msa')dnl
 dnl DAEMON_OPTIONS(`Family=inet6, Name=MTA-v6, Port=smtp, Addr=::1')dnl
-DAEMON_OPTIONS(`Family=inet,  Name=MTA-v4, Port=smtp, Addr=127.0.0.1')dnl
+dnl yasunari   DAEMON_OPTIONS(`Family=inet,  Name=MTA-v4, Port=smtp, Addr=127.0.0.1')dnl
 dnl DAEMON_OPTIONS(`Family=inet6, Name=MSP-v6, Port=submission, M=Ea, Addr=::1')dnl
-DAEMON_OPTIONS(`Family=inet,  Name=MSP-v4, Port=submission, M=Ea, Addr=127.0.0.1')dnl
+dnl yasunari   DAEMON_OPTIONS(`Family=inet,  Name=MSP-v4, Port=submission, M=Ea, Addr=127.0.0.1')dnl
 dnl #
 dnl # Be somewhat anal in what we allow
 define(`confPRIVACY_FLAGS',dnl
@@ -97,6 +97,12 @@
 include(`/etc/mail/m4/dialup.m4')dnl
 include(`/etc/mail/m4/provider.m4')dnl
 dnl #
+dnl # Masquerading options
+FEATURE(`always_add_domain')dnl
+MASQUERADE_AS(`yamasita.jp')dnl
+FEATURE(`allmasquerade')dnl
+FEATURE(`masquerade_envelope')dnl
+dnl #
 dnl # Default Mailer setup
 MAILER_DEFINITIONS
 MAILER(`local')dnl
root@cloud:/etc/mail#

local-host-name

oot@aws:/etc/mail# vi local-host-names
root@aws:/etc/mail# cat local-host-names
localhost
aws.yamasita.jp
yamasita.jp
root@aws:/etc/mail#

sendmail の再起動

root@aws:/etc/mail# /etc/init.d/sendmail restart
[ ok ] Restarting sendmail (via systemctl): sendmail.service.
root@aws:/etc/mail#

mailutils のインストール

yasunari@aws:~$ mail
-bash: mail: command not found
yasunari@aws:~$ Mail
-bash: Mail: command not found
yasunari@aws:~$

mailutils をインストールする。

yasunari@aws:~$ sudo apt-get install mailutils
Reading package lists... Done
Building dependency tree
Reading state information... Done
The following additional packages will be installed:
  guile-2.0-libs libfribidi0 libgc1c2 libgsasl7 libkyotocabinet16v5 libltdl7 liblzo2-2
  libmailutils5 libmariadbclient18 libntlm0 libpython2.7 mailutils-common mysql-common
Suggested packages:
  mailutils-mh mailutils-doc
The following NEW packages will be installed:
  guile-2.0-libs libfribidi0 libgc1c2 libgsasl7 libkyotocabinet16v5 libltdl7 liblzo2-2
  libmailutils5 libmariadbclient18 libntlm0 libpython2.7 mailutils mailutils-common
  mysql-common
0 upgraded, 14 newly installed, 0 to remove and 1 not upgraded.
Need to get 7,344 kB of archives.
After this operation, 27.6 MB of additional disk space will be used.
Do you want to continue? [Y/n] y
	:
	:
Setting up mailutils (1:3.1.1-1) ...
update-alternatives: using /usr/bin/frm.mailutils to provide /usr/bin/frm (frm) in auto mode
update-alternatives: using /usr/bin/from.mailutils to provide /usr/bin/from (from) in auto mode
update-alternatives: using /usr/bin/messages.mailutils to provide /usr/bin/messages (messages) in auto mode
update-alternatives: using /usr/bin/movemail.mailutils to provide /usr/bin/movemail (movemail) in auto mode
update-alternatives: using /usr/bin/readmsg.mailutils to provide /usr/bin/readmsg (readmsg) in auto mode
update-alternatives: using /usr/bin/dotlock.mailutils to provide /usr/bin/dotlock (dotlock) in auto mode
update-alternatives: using /usr/bin/mail.mailutils to provide /usr/bin/mailx (mailx) in auto mode
Processing triggers for libc-bin (2.24-11+deb9u1) ...
yasunari@aws:~$

テスト

まずはローカル

yasunari@aws:~$ mail yasunari
Cc:
Subject: test to yasunari
test to yasunari
yasunari@aws:~$ mail
"/var/mail/yasunari": 1 message 1 new
>N   1 Yasunari Yamashita Tue Dec 26 15:42  15/623   test to yasunari
? 1
Return-Path: <内緒@yamasita.jp>
Received: from aws.yamasita.jp (localhost [127.0.0.1])
        by aws.yamasita.jp (8.15.2/8.15.2/Debian-8) with ESMTP id vBQ6gZ4N001426
        for <内緒@aws.yamasita.jp>; Tue, 26 Dec 2017 15:42:35 +0900
Received: (from yasunari@localhost)
        by aws.yamasita.jp (8.15.2/8.15.2/Submit) id vBQ6gZWm001425;
        Tue, 26 Dec 2017 15:42:35 +0900
Date: Tue, 26 Dec 2017 15:42:35 +0900
From: Yasunari Yamashita <内緒@yamasita.jp>
Message-Id: <201712260642.vBQ6gZWm001425@aws.yamasita.jp>
To: <内緒@yamasita.jp>
Subject: test to yasunari
X-Mailer: mail (GNU Mailutils 3.1.1)

test to yasunari
? d
? q
Held 0 messages in /var/mail/yasunari
yasunari@aws:~$

外にも送ってみる

yasunari@aws:~$ mail 内緒@gmail.com
Cc:
Subject: test to gmail
test to gmail
yasunari@aws:~$