sendmail puts my machine name as part of the domain ????

[Philippe Moutarlier <philippe kscable com>]

Hi,

I am using sendmail to send messages I compose with emacs/gnus.

My domain name is : kscable.com
My machine name is : saturne

Now, I get (some) mails rejected because they say that the sender
is @saturne.kscable.com and that the domain saturne.kscable.com doesn't exist (sure !!).

I set up my sendmail, using linuxconf, to advertise my outgoing mail as coming from 
@kscable.com and I can see my emacs header doing the same right now.

I even took off this weird thing in sendmail.el which adds a "Sender:" field behind
your back that I don't want.

Any sggestions ?

Philippe