Since you intend to package gnu-pop3d (which I haven't heard of from you for quite a while), you might consider packaging virtualmail-pop3d (aka vm-pop3d) instead. Like I said in my previous mail about gnu-pop3d, Jeremy C. Reed was patching gnu-pop3d to fix some outstanding bugs and adding new features, like virtual mail.
virtualmail-pop3d (http://www.reedmedia.net/software/virtualmail-pop3d/) is a POP3 server. It is free to download and use. It supports alternative password files and mail spool directories; it can be used for setting up virtual email accounts - mailboxes without real Unix owners for each. This will allow you to have multiple email accounts with the same name on one system. In case you changed your mind about packaging gnu-pop3d (or gnu-pop3d with patches from http://www.reedmedia.net/projects/virtualmail/), please, change title of this "bug" report so it wouldn't say ITP (meaning that you intend to package this package for Debian). - Peter.