cups-pdf and unknown user

[Timetrinus]

Hello.

I'm using cups-pdf on my system. I have configured a LPD spool that is directed to this PDF printer. Now, when I print to this spool from a remote system with my userid the pdf is generated in ~/PDF. When printing with a different user that is not known on my system the pdf will be created in /var/spool/cups-pdf/Anonymous/...

I now looking for a way to everytime create the PDF in the PDF folder from the currently GDM logged in user.

Can someone help?