oh yes I have found out the problem...But I am looking for the sloution from you
I am using follwoing firewall for my server....when I start that firewall...the I can't recieve any mail from other domain..but when I stop the iptables then...mail is recieved....plz help me to get rid of that problem....plz
the /etc/rc.d/rc.firewall file:
iptables -t nat -F PREROUTING
iptables -t nat -F POSTROUTING
iptables -F OUTPUT
iptables -F FORWARD
iptables -F INPUT
echo 1 > /proc/sys/net/ipv4/ip_forward
iptables -P FORWARD DROP
iptables -P INPUT DROP
iptables -P OUTPUT ACCEPT
iptables -t nat -P POSTROUTING ACCEPT
iptables -t nat -P PREROUTING ACCEPT
iptables -A INPUT -i eth1 -p TCP --destination-port 8080 -j ACCEPT
iptables -A INPUT -i eth0 -p TCP --destination-port 8080 -j ACCEPT
iptables -A INPUT -i lo -j ACCEPT
iptables -A INPUT -i eth1 -s 192.168.115.20/32 -d 0/0 -j ACCEPT
iptables -A INPUT -i eth1 -s 192.168.115.21/32 -d 0/0 -j ACCEPT
iptables -A INPUT -i eth1 -s 192.168.115.22/32 -d 0/0 -j ACCEPT
iptables -A INPUT -i eth1 -s 192.168.115.30/32 -d 0/0 -j ACCEPT
iptables -A INPUT -m state --state ESTABLISHED,RELATED -j ACCEPT
iptables -t nat -A POSTROUTING -o eth0 -j MASQUERADE
iptables -A FORWARD -i eth1 -s 192.168.115.20/32 -d 0/0 -j ACCEPT
iptables -A FORWARD -i eth1 -s 192.168.115.21/32 -d 0/0 -j ACCEPT
iptables -A FORWARD -i eth1 -s 192.168.115.22/32 -d 0/0 -j ACCEPT
iptables -A FORWARD -i eth1 -s 192.168.115.30/32 -d 0/0 -j ACCEPT
iptables -A FORWARD -m state --state ESTABLISHED,RELATED -j ACCEPT
N.B
N.B 192.168.115.....is my LAN IP Series....
ZIM