serialmail command line problem

hi there,

luckily I managed to sort out the previous problem that I was having. but
now I have another one.

I get a dynamically assigned IP address.

I have the following command

"maildirsmtp ~alias/pppdir alias-ppp- 1.2.3.4 `hostname` "

in a script which has to execute every time the connection is open

how do I get my IP address in the `hostname` part?
or is there an easier way of doing this with the serialmail package?

***TO THE AUTHOR***
since this is specifically designed for dial-up users shouldn't this be
included as a feature by
default..... as _not_ all dial-up users get static IP's.... and hostnames
are something like
"dial-abs123.456.isp.domain
just a thought    :o)

thanx
dj boris