Your only hitch here (from my experience, YMMV) is popping. You will want to have two pop servers running as you slowly migrate since the auth mechanisim will be different between a pure qmail and a vpopmail server.
Not true. I'm pretty sure that if you run qmail-pop3d as root, vchkpw can authenticate system users as well as virtual ones.
Look at the --enable-system-user (or some similar wording) option on the vpopmail build.
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Tom Collins - [EMAIL PROTECTED]
QmailAdmin: http://qmailadmin.sf.net/ Vpopmail: http://vpopmail.sf.net/
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