Torsten, This is not really a LARTC question (unless you fetch mail from an arbitrary number of servers, in which case you'll need the link-load-sharing multiple routing tables solution). I'm guessing you solution is quite easy....see below. : I have a Debian-Woody-3.0 Router with 3 NIC's. Kernelversion 2.4.18 [ nice netmap snipped ] : Mail-Traffic over ISDN-Router : WWW-Traffic over DSL-Router : But why? [ interface definitions snipped ] : Is this correct? Well, yes. But not complete. : ### my route: : Kernel IP routing table : Destination Gateway Genmask Flags Metric Ref Use : Iface : 192.168.3.0 0.0.0.0 255.255.255.0 U 0 0 0 eth2 : 192.168.2.0 0.0.0.0 255.255.255.0 U 0 0 0 eth1 : 192.168.1.0 0.0.0.0 255.255.255.0 U 0 0 0 eth0 : 0.0.0.0 192.168.1.1 0.0.0.0 UG 0 0 0 eth0 : and now my firewall-script: Are you fetching mail from a particular mailserver? If so: # mailserver=213.165.64.20 # route add -host $mailserver gw 192.168.2.1 Or # mailserver=213.165.64.20 # ip route add $mailserver via 192.168.2.1 -Martin -- Martin A. Brown --- SecurePipe, Inc. --- mabrown@xxxxxxxxxxxxxx