What print job name does outlook 2003 use? You could temporarily disable the PDF24 Windows Service to not process the print jobs and then you can print from outlook and then open the printer queue to see all print jobs. What name does outlook use?
When outlook does not send the right filename, then the pdf24 can not determine the name from the print job and outbind://2-00000000CDD21EC4E8BC8E419987BD5255E30EF84B26400 is not the right file name.