Routing question

[Leon Botes]

I have a box with 5 nics.
Cal them A,B,C,D,E.
A & B are different internet connections.
E is a connection to a mail server on a public /29
C & D are connections for 2 differnet client networks.

Is it possible to have all traffic coming in via C sent to a default gateway
on A's network and
all traffic coming in via D sent to a default gateway on B's network.
And secondly will both client networks be able to see the E/29?

If so how?

Thanks
Leon