Exim4 return-path header

[Eddy <vive.linuxshadoko@belgacom.net>]

Hi,

I use Exim4 with Sarge and have a little configuration problem regarding 
mail headers. 

What should I do in order to have "Return-path" and "Sender" headers added 
by Exim to be exactly the same as the "From" header created by my mail 
client ?

If my question isn't clear enough, please read on for more explanations.

I have several email addresses and I can choose the one to use from my 
mail client (usually kmail) ; that address is written in the "From" 
header.  But then Exim add "Return-path" and "Sender" headers containing 
eddy@debian.  Thus my mail headers are like these :
	From : real.address1@real.provider
	Return-path : eddy@debian
	Sender : eddy@debian

but what I want is 
	From : real.address1@real.provider
	Return-path : real.address1@real.provider
	Sender : real.address1@real.provider

I know I can add 
	eddy : real.address1@real.provider
in the /etc/email-addresses
but then when I'll chose (from within my mail client) to use 
real.address2@other.provider the headers will be
	From : real.address*2*@other.provider
	Return-path : real.address1@real.provider
	Sender : real.address1@real.provider
while in that case I'd rather have
	From : real.address*2*@other.provider
	Return-path : real.address*2*@other.provider
	Sender : real.address*2*@other.provider

Writing 
	eddy: use_whatever_is_in_the_from_path
in /etc/email-addresses won't work (would it?) but that's basicly what I'd 
like to achieve.

Please don't tell me to RTFM, I've done that and am lost.
I found out that adding myself to the trusted users suppress the "Sender" 
header entirely but the 'bad' "Return-path" persists.

I've tried to use "return_path_add = false" or "return_path_remove = 
true" in the exim config files but it didn't work.  (Anyway, I suppose I 
do need a return-path, don't I ? )

Thanks for any help.

-- 
Eddy (remove shadoko from the address)

                "En essayant continuellement, on finit par réussir
                 Donc : plus ça rate, plus on a de chance que ça marche"
		                                 Les Shadoks