The source that is in the vchkpw is from 1998, and is version 3.0. The upstream name of this package has changed to "vpopmail", and is now at version 5.2.1 Chris Johnson <sixie@nccnet.co.uk> is attributed as being the original author in vpopmail-5.2.1/AUTHORS. The current website for vpopmail (nee vchkpw) is http://inter7.com/vpopmail/ -- >dopey!debian.org <http://www.debian.org/>