Faxonline are currently running a Beta test of their online fax service.
During the period of the trial you can get a free Australian fax number based in Sydney. Which will allow you to receive faxes and sending will be available shortly (likely by the time you read this post).
Some of the features available:
- fax to email (5 email addresses)
- web interface to view, manage and download received faxes
- account summary
- real time, detailed usage reports
Note: The service is no longer free but there is an introductory offer - one dollar for your first month.[/]