如何设定procmail?

[罗非鱼]

getmail的安装以及配置使用
1.安装
sudo apt-get install getmail4
2.配置
mkdir /home/debian/.getmail
cd /home/debian/.getmail
mkdir maildir
cd maildir
mkdir new cur tmp

3.配置文件
nano /home/debian/.getmail/getmailrc.163
文件内容如下：

# This is a configuration file for buddha@qq.com
[retriever]
type = SimplePOP3Retriever
server = pop.163.com
username = x1
password = x2

[destination]
type = Maildir
path = /home/debian/.getmail/maildir/

[options]
read_all = False
delete = False
# configuration file ends here

4.运行
getmail --rcfile=getmailrc.163

getmail会自动收取邮件，下载的邮件会保存在~/.getmail/maildir/new/下。

procmail的安装配置
1.sudo apt-get install procmail
2.配置文件
nano /home/debian/.procmailrc
#Preliminaries
SHELL=/bin/sh #Use the Bourne shell (check your path!)
MAILDIR=${HOME}/.getmail/maildir #First check what your mail directory is!
LOGFILE=${MAILDIR}/procmail.log
LOG="--- Logging ${LOGFILE} for ${LOGNAME}, "

:0
* ^From: x1@qq\.com
/dev/null


nano /home/debian/.forward

"|IFS=' ' && exec /usr/bin/procmail || exit 75 #debian"


全部完成后，重新启动，我从x1@qq.com发送邮件，发现根本不能阻止它接收邮件，请问，我的错误在哪里？