[CentOS] OT - Proftpd Authentication Failure

<snip>

>Does the wells user have a valid shell as defined in /etc/shells?  Also,
>make sure that wells wasn't added to /etc/ftpusers  My wife's name is
>A(a)manda and this has bitten me a few times.
>  
>
Yes the Wells users has a valid shell.  The wells user was just an 
example.  The error occurs on all users trying to authenticate via 
proftpd.  Ftpusers does not include any names that are being denied.