Hi! I'm on a organization with 2 different 2003 domain (DOMAIN_A and DOMAIN_B) with a trust relationship. I'm using samba version 3.0.14a that comes with Ubuntu Breezy to map Active Directory group and users. I use local groups of DOMAIN_A but some users of these groups are from DOMAIN_B: $ getent group "DOMAIN_A\group1" DOMAIN_A\group:x:10787:DOMAIN_A\user1 $ net rpc group members "group1" -S domain_controler_A.domain_a.com DOMAIN_A\user1 DOMAIN_B\user2 DOMAIN_B\user3 DOMAIN_B\user4 Also tested changing "security" param in the smb.conf: ads: winbind behaves as exposed domain: winbind doesn't know nothing about local domain groups. I really want to solve this problem because is preventing me to use samba to setup a printserver. Please ask for anything that can help to trace the problem. Greetings Ximo