Sorry ,my english is poor! thereinafter is about my mail system and os system.
RH9.0 mysql-4.1.1 qmail-1.03 ucspi-tcp-0.88 daemontools-0.76 vpopmail-5.5.0 when the install completed. I test the mail system,smtp and pop3 is well. authentication use vpopmail with mysql courier-imap-3.0.3 install step install reference http://sylvestre.ledru.info/howto/howto_qmail_vpopmail.php #chown vpopmail.vchkpw courier-imap-3.0.3.tar.bz2 #su vpopmail $cd courier-imap-3.0.3 $./configure --prefix=/usr/local/courier-imap --disable-root-check --without-authpam \ --without-authldap --without-authpwd --without-authmysql --without-authpgsql \ --without-authshadow --without-authuserdb --without-authcustom --without-authcram \ --without-authdaemon --with-authvchkpw --with-ssl --with-redhat \ --enable-unicode=gb2312,utf-8,iso8859 /*-------------------------------- configure pass /----------------------------------*/ $make /*-------------------------------- this is the error information gcc -I/home/vpopmail/include/ -DHAVE_OPEN_SMTP_RELAY -DHAVE_VLOGAUTH -Wall -I.. -I./.. -o authvchkpw modauthvchkpw.o libauthmod.a libauth.a ../numlib/libnumlib.a ../md5/libmd5.a ../sha1/libsha1.a -L/home/vpopmail/lib -lvpopmail -L/usr/lib/mysql -lmysqlclient -lz -lcrypt -lm -lcrypt libauth.a(authvchkpw.o)(.text+0x21a): In function `auth_vchkpw': : undefined reference to `open_smtp_relay' collect2: ld returned 1 exit status make[2]: *** [authvchkpw] Error 1 make[2]: Leaving directory `/home/vpopmail/courier-imap-3.0.3/authlib' make[1]: *** [all] Error 2 make[1]: Leaving directory `/home/vpopmail/courier-imap-3.0.3/authlib' make: *** [all-recursive] Error 1 [EMAIL PROTECTED] courier-imap-3.0.3]$ echo $CFLAGS -DHAVE_OPEN_SMTP_RELAY -DHAVE_VLOGAUTH ----------------------------------------------------*/ now what can i do?