[vchkpw] CHKUSER and smtpd-auth 0.57

[Charrua]

Hi,

I have installed Netqmail-1.05 / Vpopmail 5.4.17 and 
qmail-smtpd-auth-0.57(www.fehcom.de)

Is it possible to install chkuser 2.0 with this configuration? Do I need to
make some changes?

Thanks in advance,

Andrés