Hi Craig and William, my tests are successful until now. All this tests are successful: - getent passwd, getent group, id, groups, finger, su - smbldap-useradd, smbldap-groupadd - chown username file - chgrp group file - sendmail/dovecot/ceti-poppassd - emails to/from yahoo/hotmail/gmail Notes: if I pass the username and group to chown, it fails. I have to use like this: # touch /tmp/test1 # chown root.root /tmp/test1 # chown -v this.is.avery.long.username /tmp/test1 # chgrp -v this.is.avery.long.username /tmp/test1 Thanks for the comments, Oliver -- Oliver Schulze L. <oliver@xxxxxxxxxxxxx>