Ref this page http://www.visca.com/tmda/tmda_vpop.html
It says :- IMPORTANT! If you're using vpopmail > 5.0 then you'll have to be sure to compile it with --enable-qmail-ext=y or vpopmail will ignore .qmail-user-default files. Does anyone know if this applies to vpopmail 5.2.1 ? The author of the web site/article doesn't know. Regards...Martin