Some people may have experienced agents “signing” for documents, that were commissioned/contracted to/you paid a fee for that service to be done, to be received by a named individual, but they were not signed by that individual. If anyone signs using a false name… this may apply:
http://classic.austlii.edu.au/au/legis/cth/consol_act/ca191482/s85t.html
CRIMES ACT 1914 – SECT 85T
Sending false postal messages
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.