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故障:内网机器不能ping网络域名,邮件发送成功邮箱收取不到
dns都配置好没有问题
网关iptables设置
:INPUT ACCEPT [0:0]
:FORWARD ACCEPT [0:0]
:OUTPUT ACCEPT [237864:21785306]
:RH-Firewall-1-INPUT - [0:0]
-A INPUT -j RH-Firewall-1-INPUT
-A FORWARD -j RH-Firewall-1-INPUT
-A RH-Firewall-1-INPUT -p tcp -m state --state NEW -m tcp --dport 53 -j ACCEPT
-A RH-Firewall-1-INPUT -p tcp -m tcp --sport 110 -j ACCEPT
-A RH-Firewall-1-INPUT -p tcp -m tcp --sport 25 -j ACCEPT
-A RH-Firewall-1-INPUT -p tcp -m tcp --sport 53 -j ACCEPT
-A RH-Firewall-1-INPUT -p udp -m udp --sport 53 -j ACCEPT
-A RH-Firewall-1-INPUT -p udp -m udp --dport 631 -j ACCEPT
-A RH-Firewall-1-INPUT -p tcp -m tcp --dport 631 -j ACCEPT
-A RH-Firewall-1-INPUT -m state --state RELATED,ESTABLISHED -j ACCEPT
-A RH-Firewall-1-INPUT -p tcp -m state --state NEW -m tcp --dport 22 -j ACCEPT
-A RH-Firewall-1-INPUT -j REJECT --reject-with icmp-host-prohibited
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