windows fax service smtp problems

Hello, We changed email providers and now our windows fax service on
server 2003 no longer emails us our faxes. Is there a email provider
that anyone know of that does not require smtp authentication.

I require no smtp authentication since that is what godaddy said after i
sent them the bounced email. That is why their server rejected it.

Or is there a way to add authentication to the windows fax service?