[Mailman-Users] Postfix + MySQL + Mailman

[Flávio Brito]

Dear List

Yesterday I migrate my mail server (to postix + mysql ). My Mailman lists 
stopped.  How can I put postfix + mysql + mailman?

I tried

INSERT INTO aliases VALUES ('linuxrj', 'linuxrj at gral.org.br');
INSERT INTO aliases VALUES ('linuxrj-owner at gral.org.br', 'linuxrj-admin');
INSERT INTO aliases VALUES ('linuxrj-admin at gral.org.br', 'linuxrj-admin');
INSERT INTO aliases VALUES ('linuxrj at gral.org.br','"|/var/mailman/mail/wrapper 
post linuxrj"');

my  list address is linuxrj at gral.org.br, but postfix answer me with: 

 unknown USER

How can I fix it?

Thanks

Flávio

Brasil