Routing issue

In article <1147704427.030830.317720@j73g2000cwa.googlegroups.com>,
<rich.nw3@btinternet.com> wrote:[color=blue]
>I have two firewalls/gateways to the internet. The PRIMARY is 10.0.0.1
>and
>the SECONDARY 10.0.0.2.[/color]
[color=blue]
>I have a server with an address of 10.0.0.10[/color]
[color=blue]
>The server has it's gateways setup as 10.0.0.1 with a metric of 1 and
>10.0.0.2 with a metric of 50.[/color]
[color=blue]
>If/when the primary firewall is down then incoming mail servers try to
>access 10.0.0.10 via the SECONDARY route but the as the server has the
>PRIMARY firewall as the default route the incoming mail cannot get
>through.[/color]

I wouldn't really call that a TCP/IP question: it's a networking
question, best answered by people who know something about your
firewalls and about your routers (and about your server OS.)

There are several possible ways to proceed.

Possibly the easiest of them would be to not set static routes on the
server, and to instead have the firewalls emit default RIP routes with
different metrics. When the primary firewall went down, the route that
it was presenting would time out, and the route being presented by the
secondary would then become the only known route and the server would
start using that.

There are a number of other ways of varying levels of complexity,
and the best one to use depends upon your budget, expertise,
and what kinds of problems you are trying to solve by having
multiple gateways.

I recommend that you read through the white papers written by
Vincent C. Jones, which are available on his company web site,
[url]http://www.networkingunlimited.com/[/url]