CREATE TABLE vacation_notification ( on_vacation varchar(255) NOT NULL, notified varchar(255) NOT NULL, notified_at timestamp NOT NULL default now(), CONSTRAINT vacation_notification_pkey PRIMARY KEY(on_vacation, notified), FOREIGN KEY (on_vacation) REFERENCES vacation(email) ON DELETE CASCADE ) ENGINE=InnoDB DEFAULT CHARSET=utf8 COLLATE=utf8_general_ci TYPE=InnoDB COMMENT='Virtual Vacation Notifications'; #1005 - Can't create table './postfix/vacation_notification.frm' (errno: 150)