my e-mail server is behind RedHat 8 gateway i use these

Chain PREROUTING (policy ACCEPT)
target prot opt source destination
DNAT tcp -- anywhere 10.10.10.9 tcp dpt:http to:192.168.1.50:80
DNAT tcp -- anywhere 10.10.10.9 tcp dptop3 to:192.168.1.50:110
DNAT udp -- anywhere 10.10.10.9 udp dptop3 to:192.168.1.50:110
DNAT udp -- anywhere 10.10.10.9 udp dpt:smtp to:192.168.1.50:25
DNAT tcp -- anywhere 10.10.10.9 tcp dpt:smtp to:192.168.1.50:25


Chain POSTROUTING (policy ACCEPT)
target prot opt source destination
SNAT all -- 192.168.1.50 10.10.10.10 to:10.10.10.15
SNAT all -- 192.168.1.50 anywhere to:10.10.10.9
SNAT all -- 192.168.1.200 !192.168.2.0/24 to:10.10.10.9
SNAT all -- 192.168.2.0/24 !192.168.1.0/24 to:10.10.10.15
SNAT all -- 192.168.1.0/24 !192.168.2.0/24 to:10.10.10.15

Chain OUTPUT (policy ACCEPT)
target prot opt source destination
[root@redgw root]# route
Kernel IP routing table
Destination Gateway Genmask Flags Metric Ref Use Iface
192.168.3.0 * 255.255.255.0 U 0 0 0 eth0
192.168.2.0 192.168.3.1 255.255.255.0 UG 0 0 0 eth0
192.168.1.0 * 255.255.255.0 U 0 0 0 eth1
10.10.10.0 * 255.255.255.0 U 0 0 0 eth0
127.0.0.0 * 255.0.0.0 U 0 0 0 lo
default 10.10.10.1 0.0.0.0 UG 0 0 0 eth0
[root@redgw root]

192.168.1.50 = email server
10.10.10.9= of eth0:0 of gw for my email server
10.10.10.10= ISP wireless port address
10.10.10.15= gw eth0 address (aasined by ISP)

plzzzzzzzzzzzzzzzzzzzzz help me

Thanks GOD its working,
its realy fucked up my brain with in 4 hours,
no problem in gw, email server just lost its default route :@:@:@:@