@odez999 I believe that if you are refused entry into a country for any reason it is the airline's responsibility to 'send you back where you came from'. I don't think it has anything to do with the Australian government. At least that is what I read in "
Air Babylon", which is a funny look into the airline industry.
Q1. Do I, as the applicant, submit the sponsor's letter with my SosBud application? Or does the sponsor have to send the letter directly to the consulate?
You as the applicant take the sponor's letter to the embassy/consulate.
Q2. So any ticket out of Indonesia issued within six months of stay is considered valid with this application?
Yes, I think. Just confirm with the embassy/consulate when you apply. I have never been asked for this in Malaysia or Singapore, but it seems more of a requirement if you are applying in Australia.