A document served by post, fax or electronic communication is taken to have been served:
(a) if it was posted to an address in Australia--on the day the document would be delivered in the ordinary course of the post; or
(b) if it was posted by airmail to an address outside Australia--on the 28th day after posting; or
(c) if the document was sent by fax--on the next business day after the document was sent; or
(d) if the document was sent by electronic communication--on the next business day after the document was sent.