samba - Apr 2001 - %U isn't substituted(?)

Hi,

I installed samba 2.2.0 but I have one problem. %U isn't substituted
for example:
message command = /bin/sh -c ?cat %s | mail -s "winpopup from %U@%f (%m) to
%t" misiek; /bin/rm %s? &

This was working ok with samba 2.0.7 but now I get only:
    Subject: winpopup from %U@MISIEK (arm) to arm

Patches welcome.

ps. please CC to me as I'm not subscribed to samba list.
-- 
Arkadiusz Mi?kiewicz, AM2-6BONE    [ PLD GNU/Linux IPv6 ]
http://www.t17.ds.pwr.wroc.pl/~misiek/ipv6/   [ enabled ]