qmail + vpopmail?

I have a virtual dedicated server with godaddy. I have installed tmda 
and have it mostly working. Emails get challenged but the response gets 
bounced by qmail.
It seems that the extension addresses are not working properly.

I am confused as to whether I have vpopmail on my system. My setup 
appears to be standard qmail based on the documentation I have looked 
at, and it  seems to me that the virtual domain and extension address is 
enabled by qmail. My mail directory is as follows:

/var/qmail/mailnames/$domain/$user

Where $domain and $user are the domain and user respectively.

This seems to differ from the vpopmail setup directories I have seen.

This is my .qmail file:

| if [ -z "$SA" ]; then export SA=1; /usr/local/psa/bin/psa-spamc -f -u 
[email protected] -U /tmp/spamd_full.sock > spamcheck$$; if 
[ -s spamcheck$$ ]; then /var/qmail/bin/qmail-local "$USER" "$HOME" 
"$LOCAL" "" "" "$HOST" "$SENDER" "$DEFAULT" < spamcheck$$; retval=$?; rm 
-f spamcheck$$; [ $retval = 0 ] && exit 99; exit $retval; fi; rm -f 
spamcheck$$; fi # ACCEPT UCE
| true
| preline /usr/local/tmda-1.1.9/bin/tmda-filter
./Maildir/

My .qmail-default is sylinked to the .qmail file

This is my config file:

#
# TMDA configuration file.  See
# http://wiki.tmda.net/ConfigurationVariables for descriptions of all
# the available options.

########################################################
# Required settings.  One from each section is required.
########################################################

MAIL_TRANSFER_AGENT = "qmail"
#MAIL_TRANSFER_AGENT = "postfix"
#MAIL_TRANSFER_AGENT = "exim"
#MAIL_TRANSFER_AGENT = "sendmail"

RECIPIENT_DELIMITER = "-"
#RECIPIENT_DELIMITER = "+"

#DELIVERY = "~/Mailbox"
#DELIVERY = "/var/mail/%s" % os.environ.get("USER")
DELIVERY = "~/Maildir/"
#DELIVERY = "|/usr/bin/procmail ~/.procmailrc-tmda"
#DELIVERY = "[email protected]"

####################################################
# Optional settings.
# Here are some recommended configuration variables.
####################################################

CRYPT_KEY_FILE = "~/.tmda/crypt_key"
BARE_APPEND = "~/.tmda/lists/whitelist"
CONFIRM_APPEND = "~/.tmda/lists/confirmed"
LOGFILE_INCOMING = "~/.tmda/incoming.log"
LOGFILE_OUTGOING = "~/.tmda/outgoing.log"



Any suggestions how to get extension addresses working so the challenge 
response can be received will be greatly appreciated. If any logs would 
be helpful let me know.

-- 
Regards,


Chris Barilla
The Lending Company
714-668-1298
714-784-7498 (FAX)
[email protected]