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CentOS7/AmazonLinux2にPostfix3系をインストールする

Last updated at Posted at 2021-03-13

CentOS7/AmazonLinux2にPostfix3系をインストールするときの手順です。
どちらのOSも同じ手順です。

デフォルトでは2系がインストールされています。

[root@amzn2 ~]# yum info postfix
Loaded plugins: dkms-build-requires, langpacks, priorities, update-motd
Installed Packages
Name        : postfix
Arch        : x86_64
Epoch       : 2
Version     : 2.10.1
Release     : 6.amzn2.0.3
Size        : 12 M
Repo        : installed
Summary     : Postfix Mail Transport Agent
URL         : http://www.postfix.org
License     : IBM and GPLv2+
Description : Postfix is a Mail Transport Agent (MTA), supporting LDAP, SMTP AUTH
            : (SASL), TLS

既存のpostfixをアンインストール

[root@amzn2 ~]# systemctl stop postfix.service
[root@amzn2 ~]# yum remove postfix

GhettoForgeリポジトリの追加

[root@amzn2 ~]# yum install http://mirror.ghettoforge.org/distributions/gf/gf-release-latest.gf.el7.noarch.rpm

GhettoForgeリポジトリの無効化

/etc/yum.repos.d/gf.repo

enabled=1
↓
enabled=0

インストールされるバージョンを確認

[root@amzn2 ~]# yum --enablerepo=gf-plus info postfix3
Loaded plugins: dkms-build-requires, langpacks, priorities, update-motd
gf-plus                                                   | 2.9 kB  00:00:00     
gf-plus/x86_64/primary_db                                 | 104 kB  00:00:01     
65 packages excluded due to repository priority protections
Available Packages
Name        : postfix3
Arch        : x86_64
Epoch       : 2
Version     : 3.5.8
Release     : 1.gf.el7
Size        : 3.1 M
Repo        : gf-plus/x86_64
Summary     : Postfix Mail Transport Agent
URL         : http://www.postfix.org
License     : IBM
Description : Postfix is a Mail Transport Agent (MTA), supporting LDAP, SMTP AUTH
            : (SASL), TLS

インストール

[root@amzn2 ~]# yum --enablerepo=gf-plus install postfix3

[root@amzn2 ~]# postconf | grep mail_version
mail_version = 3.5.8
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