I was wondering if somebody could assist me in the following
I have a lan with a mail server, a fixed outside ip address leased line router at 10.1.1.1, and a dynamic outside ip address adsl router at 10.1.1.5
Our linux mail server always used to have the leased line router at 10.1.1.1, but now with our adsl, I'd like traffic to go across 10.1.1.5, I thought it would be straight forward to just change the default gateway from 10.1.1.1 to 10.1.1.5, but this resulted in any traffic coming in via 10.1.1.1 being ignored. I've been told it is because the replies go out over 10.1.1.5
I've looked over the adv routing howto, but can't see how I would implement it according to section 4.2.1, as I won't always know our ip address for the adsl connection.
Could someone point me in the right direction?
Thanks, Alex
