Hi guys Just a question. I have a firewall w/ 3 NIC as below: Internet ADSL | |eth1 200.200.200.44/26 _________________________ | Firewall | DMZ | iptables 1.2.8 |_eth2 192.168.1.1/24______EMail |_______________________| 192.168.1.3 | | eth0 10.0.0.1/24 LAN Firewall : Debian 2.4.22 + iptables 1.2.8 route: 200.200.200.0/26 dev eth1 proto kernel scope link src 200.200.200.44 10.0.0.0/24 dev eth0 proto kernel scope link src 10.0.0.1 192.168.1.0/24 dev eth2 proto kernel scope link src 192.168.1.1 default via 200.200.200.1 dev eth1 rules: a) iptables -A PREROUTING -d 200.200.200.1 -p tcp -m multiport --dports smtp,pop3,imap2,webcache -j DNAT --to-destination 192.168.1.3 b) iptables -A POSTROUTING -o eth1 -j SNAT --to-source 200.200.200.1 c) iptables -A POSTROUTING -o eth2 -j SNAT --to-source 192.168.1.1 What happens: - all desktops ( M$windows) access webmail and email w/ no problems, but if I insert rule c) above it causes a delay when any desktop hit get/post e-mail in Outlook and it takes +- 40 seconds to "connenct". I know that must be a silly misconfiguration of something but after 1 week searching the problem I can't imagine what's wrong. Can anybody help me please Thanks in advance
