关于启动QMAIL的脚本

zwpx

下面这个是/var/qmail/smtp

#!/bin/sh

QMAILDUID='/usr/bin/id -u qmaild'
NOFILESGID='/usr/bin/id -g nofiles'

/usr/local/bin/tcpserver -H -R -x /usr/local/vpopmail/etc/tcp.smtp.cdb -c 20
\ -u $QMAILDUID -g $NOFILESGID 0 smtp /var/qmail/bin/qmail-smtpd 2>&1 \
|/var/qmail/bin/splogger smtpd 3 &

不知为什么，当执行的后，就显示
tcpserver: usage: tcpserver [ -1UXpPhHrRoOdDqQv ] [ -c limit ] [ -x rules.cdb ] [ -B banner ] [ -g gid ] [ -u uid ] [ -b backlog ] [ -l localname ] [ -t timeout ] host port program

请问我那里写错了？