> If traffic does not flow without it, it could mean that the mail server > does not send the reply traffic back to the NAT box. This is a routing > problem. Does the mail server use the NAT box as its default gateway ? Ah, now we're getting somewhere. No, the mail server doesn't use the NAT box as it's default gateway, it's using a general default route somewhere else in the network for it. The NAT box and the mail server are on different VLAN's, but that's about all that separates them -- both have globally routable IP's. I'm literally just trying to emulate the functionality of LVS here, where port 80 on an IP goes to one machine and port 25 goes somewhere else. John -- John Madden Sr. UNIX Systems Engineer Ivy Tech Community College of Indiana jmadden@xxxxxxxxxxx - To unsubscribe from this list: send the line "unsubscribe netfilter" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
