linux下服务器发送邮件报错：could not connect to smtp host。
在网上找了很多方法，都未能解决，后来关闭selinux，问题解决。
原因分析：selinux默认阻止了apache向外的 socket
解决方案：
第一种关闭selinux：
[root@localhost /]# vi /etc/selinux/config # This file controls the state of SELinux on the system. # SELINUX= can take one of these three values: # enforcing - SELinux security policy is enforced. # permissive - SELinux prints warnings instead of enforcing. # disabled - No SELinux policy is loaded. SELINUX=disabled # SELINUXTYPE= can take one of these two values: # targeted - Targeted processes are protected, # mls - Multi Level Security protection. SELINUXTYPE=targeted 将SELINUX=enforcing 改为 SELINUX=disabled 然后：reboot
第二种配置SELINUX:
[root@localhost /]# setsebool -P httpd_can_network_connect 1 [root@localhost /]# service httpd restart [root@localhost /]# service network restart
转载请注明出处：怡然之乐 – FineYi
参考资料：Ryan’s Scraps