postfix aliases

Hello, My new postfix install do not seems to read the /etc/alases file (of course I have run newaliases) mostly default install with openSUSE doc https://en.opensuse.org/Mail_server_HOWTO only for local delivery (no dovecot) if I send a mil to jdd, with jdd: root the mail still come in jdd mail box any idea? thanks jdd -- http://dodin.org http://valeriedodin.com