A person shall not:
(a) intentionally and without a person's authority, submit, or cause to be submitted, to Australia Post as a postal message signed or to be sent by the person, a postal message that was not so signed or to be sent;
(b) intentionally submit, or cause to be submitted, to Australia Post a postal message signed with the name of a fictitious person;
(c) intentionally and without the authority of the person sending a postal message, alter the postal message; or
(d) intentionally write, issue or deliver a document purporting to be a postal message that has been carried by post knowing that it is not such a message.
Penalty: Imprisonment for 1 year.