[exim4] mixed up about terminology

[Harry Putnam <reader@newsguy.com>]

when running `dpkg-reconfigure exim4-config'  I've run accross a few
of the questions that are confusing to me... 

The current one I'm stumbling over is 

1)  A question about listing of host IPs the smtp listener will
    listen for...

And then later on there is
2) A question about which hosts your server will relay for.

(NOTE: These question do not appear back to back as I have them here)

I probably have this all wrong but isn't the first question referring
to remote IPs that will be using the server as smtp server.

And the second one, is referring to using the server as smart host?
which is also as an smtp server.

That is, they are the same question in different words.

Incoming smtp traffic (in question 1) (I guess) is referring to mails
sent from remote IP to smtp server IP, to be sent on there way.

And in question 2 the relaying question... their talking about sending
from remote IP to server IP to perform ... smtp service ...

I'm pretty sure I'm leaving out some major piece of the smtp puzzle
but not at all sure what it might be.