I tried fax a document from Adobe Reader for OS X today and it crashed, so I opened the same document in Preview and it faxed just fine. The trouble is, once the job was finished faxing, I got no message saying the fax was sent, no "received ok" or any other confirmation. I couldn't find the log, and even goitng to <http://localhost:631/printers> yielded no such information.
Is there someone to find out about how your faxes fared? Perhaps via the Terminal?