[vchkpw] no such users direcotries - help

[Marc Skinner]

I'm using VpopMail 5.2.1 , and i've recently noticed a whole bunch of "no such user [EMAIL PROTECTED]" directories in my root partition.  i have some that are for real users of virtual domains i'm hosting and i have some addresses of emails i've sent out to people.  inside the folder is nothing, if i delete them they come back.  any idea what this is and why they are being created?   thanks for the help!