How is net connection selected?

[Greg Kedrovsky]

On Thu, Jan 15, 2004 at 12:18:50PM -0600, Duane Attaway wrote:
> 
> Sendmail just looks up the address you want to send it to, attempts to
> make a connection, and if it gets it, sends it. 

I think this is where I don't understand the process (and maybe I don't
need to). sendmail "attempts to make a connection" - how does it do
that? How does it "know" to make that connection over eth0 (cable modem)
first rather than dial-on-demand with /dev/modem and ppp? Is there a
config file somewhere that does that? Is it a routing function (because
route -n shows my ethernet connection, not my dial-up)?

And, like I said, maybe I don't need to konw this stuff. But, you
probably know how it is: you get this "itch" about something, and until
you scratch it til it bleeds, it bugs you. 

Thanks, Duane.

-Greg

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