CRIMES ACT 1914 SECT 85T

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.