Courier PostgreSQL authentication module

Please read README.authmysql.html since almost all information there applies to postgres as well, but with Postgres change the schema to:

CREATE TABLE passwd (
        id                    varchar(128) DEFAULT '' NOT NULL,
        crypt                 varchar(128) DEFAULT '' NOT NULL,
        clear                 varchar(128) DEFAULT '' NOT NULL,
        name                  varchar(128) DEFAULT '' NOT NULL,
        uid                   int DEFAULT 65534 NOT NULL,
        gid                   int DEFAULT 65534 NOT NULL,
        home                  varchar(255) DEFAULT '' NOT NULL,
        maildir               varchar(255) DEFAULT '' NOT NULL,
        defaultdelivery       varchar(255) DEFAULT '' NOT NULL,
        quota                 varchar(255) DEFAULT '' NOT NULL,
        CONSTRAINT id PRIMARY KEY (id)
);