Erro na compilação do VPOPMAIL

Caros,
estou seguindo um tutorial de instalação do qmail, so que quando cheno no treço abaixo

# cd /usr/src/downloads/netqmail-1.05/netqmail-1.05
# bunzip2 -c ../../qmail-toaster-0.7.2.patch.bz2 | patch -p0
# patch -p0 < ../../empf-qmail-toaster.patch
# make clean
# make
# qmailctl stop
# make setup check

Quanto eu entro com o comando make eu tenho a seguinte resposta, abaixo é o trecho qua da erro.

./compile time.c
./compile spf.c
./compile spam.c
( ( ./compile tryltai.c &&
./load tryltai -ltai ) >/dev/null 2>&1
&& echo -ltai || exit 0 ) > tai.lib
rm -f tryltai.o tryltai
./compile base64.c
./compile policy.c `head -1 conf-policy`
./compile chkuser.c
chkuser.c:37:22: vpopmail.h: No such file or directory
chkuser.c:38:19: vauth.h: No such file or directory
chkuser.c:39:29: vpopmail_config.h: No such file or directory
chkuser.c: In function `realrcpt':
chkuser.c:682: warning: comparison between pointer and integer
chkuser.c:803: warning: assignment makes pointer from integer without a cast
chkuser.c:824: error: dereferencing pointer to incomplete type
chkuser.c:824: error: `BOUNCE_MAIL' undeclared (first use in this function)
chkuser.c:824: error: (Each undeclared identifier is reported only once
chkuser.c:824: error: for each function it appears in.)
chkuser.c:829: error: dereferencing pointer to incomplete type
chkuser.c:830: error: dereferencing pointer to incomplete type
chkuser.c:834: error: dereferencing pointer to incomplete type
make: *** [chkuser.o] Error 1

Ja pesquisei mas nao consegui descobir o que esta causando esse erro durante a compilação. Se por acaso puder me ajudar fico agradecido.

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