Warning: fsockopen(): unable to connect to tcp://localhost:25 (Permission denied)

发邮件遇到的问题

Warning: fsockopen(): unable to connect to tcp://localhost:25 (Permission denied)

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原因
http://www.vbulletin.com/forum/forum/vbulletin-3-8/vbulletin-3-8-questions-problems-and-troubleshooting/3945336-can-t-get-email-working-again-after-server-move http://www.vbulletin.com/forum/forum/vbulletin-legacy-versions-products/legacy-vbulletin-versions/vbulletin-3-6-questions-problems-and-troubleshooting/223336-smtp-mail-and-selinux-in-enforcing-mode?s=182f71624b82111a30417cdc5d07876b
就是因为没关selinux

解决办法

（７）SELinuxの無効化

[root@centos ~]# getenforce　←　SELinux状態確認

Enforcing　←　SELinux有効

[root@centos ~]# setenforce 0　←　SELinux無効化

[root@centos ~]# getenforce　←　SELinux状態確認

Permissive　←　SELinux無効

[root@centos ~]# vi /etc/sysconfig/selinux　←　SELinux設定ファイル編集

SELINUX=enforcing

↓

SELINUX=disabled　←　システム起動時にSELinuxを無効化