.......................................
      :                Postfix              :
   ----->smtpd \                            :
      :         -pre-cleanup-\       /local---->
   ---->pickup /              -queue-       :
      :             -cleanup-/   |   \smtp----->
      :     bounces/    ^        v          :
      : and locally     |        v          :
      :   forwarded   smtpd  smtp-amavis    :
      :    messages   10025      |          :
      ...........................|...........
                        ^        |
                        |        v
            ............|..............................
            :           |   $inet_socket_port=10024   :
            :           |                             :
            : $forward_method='smtp:127.0.0.1:10025'  :
            : $notify_method ='smtp:127.0.0.1:10025'  :
            :                                         :
            :    amavisd-new                          :
            ...........................................
		

# rpm -ivh unrar-3.2.3-2.9.i386.rpm 
# rpm -ivh zoo-2.10-11.9.i386.rpm 
# rpm -ivh unzoo-4.4-2.i386.rpm 
# rpm -ivh arc-5.21e-6.i386.rpm 
# rpm -ivh nomarch-1.3-1mdk.i586.rpm 
# rpm -ivh unarj-2.65-3.9.i386.rpm 
# rpm -ivh arj-3.10-0.1.i386.rpm 
# rpm -ivh freeze-2.5.0-7.i386.rpm 
# mkdir cmpress 
# tar -zxvf compress-4.0.1.tar.gz -C compress 
# cd compress 
# make 
# make install 
		

[root@linuxas3 src]# perl -MCPAN -e shell
We have to reconfigure CPAN.pm due to following uninitialized parameters:

cpan_home, keep_source_where, build_dir, build_cache, scan_cache, index_expire, gzip, tar, unzip, ma
ke, pager, makepl_arg, make_arg, make_install_arg, urllist, inhibit_startup_message, ftp_proxy, http
_proxy, no_proxy, prerequisites_policy, cache_metadata

/usr/lib/perl5/5.8.0/CPAN/Config.pm initialized.


CPAN is the world-wide archive of perl resources. It consists of about
100 sites that all replicate the same contents all around the globe.
Many countries have at least one CPAN site already. The resources
found on CPAN are easily accessible with the CPAN.pm module. If you
want to use CPAN.pm, you have to configure it properly.

If you do not want to enter a dialog now, you can answer 'no' to this
question and I'll try to autoconfigure. (Note: you can revisit this
dialog anytime later by typing 'o conf init' at the cpan prompt.)

Are you ready for manual configuration? [yes]no
		

[root@linuxas3 src]# perl -MCPAN -e shell
We have to reconfigure CPAN.pm due to following uninitialized parameters:

cpan_home, keep_source_where, build_dir, build_cache, scan_cache, index_expire, gzip, tar, unzip, ma
ke, pager, makepl_arg, make_arg, make_install_arg, urllist, inhibit_startup_message, ftp_proxy, http
_proxy, no_proxy, prerequisites_policy, cache_metadata

/usr/lib/perl5/5.8.0/CPAN/Config.pm initialized.


CPAN is the world-wide archive of perl resources. It consists of about
100 sites that all replicate the same contents all around the globe.
Many countries have at least one CPAN site already. The resources
found on CPAN are easily accessible with the CPAN.pm module. If you
want to use CPAN.pm, you have to configure it properly.

If you do not want to enter a dialog now, you can answer 'no' to this
question and I'll try to autoconfigure. (Note: you can revisit this
dialog anytime later by typing 'o conf init' at the cpan prompt.)

Are you ready for manual configuration? [yes]


The following questions are intended to help you with the
configuration. The CPAN module needs a directory of its own to cache
important index files and maybe keep a temporary mirror of CPAN files.
This may be a site-wide directory or a personal directory.



I see you already have a  directory
    /root/.cpan
Shall we use it as the general CPAN build and cache directory?

CPAN build and cache directory? [/root/.cpan]


If you want, I can keep the source files after a build in the cpan
home directory. If you choose so then future builds will take the
files from there. If you don't want to keep them, answer 0 to the
next question.



How big should the disk cache be for keeping the build directories
with all the intermediate files?

Cache size for build directory (in MB)? [10]


By default, each time the CPAN module is started, cache scanning
is performed to keep the cache size in sync. To prevent from this,
disable the cache scanning with 'never'.

Perform cache scanning (atstart or never)? [atstart]


To considerably speed up the initial CPAN shell startup, it is
possible to use Storable to create a cache of metadata. If Storable
is not available, the normal index mechanism will be used.

Cache metadata (yes/no)? [yes]


The next option deals with the charset your terminal supports. In
general CPAN is English speaking territory, thus the charset does not
matter much, but some of the aliens out there who upload their
software to CPAN bear names that are outside the ASCII range. If your
terminal supports UTF-8, you say no to the next question, if it
supports ISO-8859-1 (also known as LATIN1) then you say yes, and if it
supports neither nor, your answer does not matter, you will not be
able to read the names of some authors anyway. If you answer no, names
will be output in UTF-8.

Your terminal expects ISO-8859-1 (yes/no)? [yes]


The CPAN module can detect when a module that which you are trying to
build depends on prerequisites. If this happens, it can build the
prerequisites for you automatically ('follow'), ask you for
confirmation ('ask'), or just ignore them ('ignore'). Please set your
policy to one of the three values.

Policy on building prerequisites (follow, ask or ignore)? [ask]


The CPAN module will need a few external programs to work properly.
Please correct me, if I guess the wrong path for a program. Don't
panic if you do not have some of them, just press ENTER for those. To
disable the use of a download program, you can type a space followed
by ENTER.

Where is your gzip program? [/bin/gzip]
Where is your tar program? [/bin/tar]
Where is your unzip program? [/usr/bin/unzip]
Where is your make program? [/usr/bin/make]
Where is your links program? [/usr/bin/links]
Where is your wget program? [/usr/bin/wget]
Warning: ncftpget not found in PATH
Where is your ncftpget program? []
Warning: ncftp not found in PATH
Where is your ncftp program? []
Where is your ftp program? [/usr/kerberos/bin/ftp]
What is your favorite pager program? [/usr/bin/less]
What is your favorite shell? [/bin/bash]


Every Makefile.PL is run by perl in a separate process. Likewise we
run 'make' and 'make install' in processes. If you have any
parameters (e.g. PREFIX, LIB, UNINST or the like) you want to pass
to the calls, please specify them here.

If you don't understand this question, just press ENTER.

Parameters for the 'perl Makefile.PL' command?
Typical frequently used settings:

    POLLUTE=1        increasing backwards compatibility
    LIB=~/perl       non-root users (please see manual for more hints)

Your choice:  []
Parameters for the 'make' command?
Typical frequently used setting:

    -j3              dual processor system

Your choice:  []
Parameters for the 'make install' command?
Typical frequently used setting:

    UNINST=1         to always uninstall potentially conflicting files

Your choice:  []


Sometimes you may wish to leave the processes run by CPAN alone
without caring about them. As sometimes the Makefile.PL contains
question you're expected to answer, you can set a timer that will
kill a 'perl Makefile.PL' process after the specified time in seconds.

If you set this value to 0, these processes will wait forever. This is
the default and recommended setting.

Timeout for inactivity during Makefile.PL? [0]


If you're accessing the net via proxies, you can specify them in the
CPAN configuration or via environment variables. The variable in
the $CPAN::Config takes precedence.

Your ftp_proxy?
Your http_proxy?
Your no_proxy?
You have no /root/.cpan/sources/MIRRORED.BY
  I'm trying to fetch one
CPAN: LWP::UserAgent loaded ok
Fetching with LWP:
  ftp://ftp.perl.org/pub/CPAN/MIRRORED.BY




Now we need to know where your favorite CPAN sites are located. Push
a few sites onto the array (just in case the first on the array won't
work). If you are mirroring CPAN to your local workstation, specify a
file: URL.

First, pick a nearby continent and country (you can pick several of
each, separated by spaces, or none if you just want to keep your
existing selections). Then, you will be presented with a list of URLs
of CPAN mirrors in the countries you selected, along with previously
selected URLs. Select some of those URLs, or just keep the old list.
Finally, you will be prompted for any extra URLs -- file:, ftp:, or
http: -- that host a CPAN mirror.

(1) Africa
(2) Asia
(3) Central America
(4) Europe
(5) North America
(6) Oceania
(7) South America
Select your continent (or several nearby continents) [] 2
Sorry! since you don't have any existing picks, you must make a
geographic selection.

(1) China
(2) Indonesia
(3) Israel
(4) Japan
(5) Malaysia
(6) Philippines
(7) Republic of Korea
(8) Russian Federation
(9) Saudi Arabia
(10) Singapore
(11) Taiwan
(12) Thailand
Select your country (or several nearby countries) [] 1
Sorry! since you don't have any existing picks, you must make a
geographic selection.

(1) ftp://ftp.shellhung.org/pub/CPAN
(2) ftp://mirrors.hknet.com/CPAN
(3) http://cpan.linuxforum.net/
Select as many URLs as you like,
put them on one line, separated by blanks [] 3

Enter another URL or RETURN to quit: []
New set of picks:
  http://cpan.linuxforum.net/


WAIT support is available as a Plugin. You need the CPAN::WAIT module
to actually use it.  But we need to know your favorite WAIT server. If
you don't know a WAIT server near you, just press ENTER.

Your favorite WAIT server?
   [wait://ls6-www.informatik.uni-dortmund.de:1404]


commit: wrote /usr/lib/perl5/5.8.0/CPAN/Config.pm

cpan shell -- CPAN exploration and modules installation (v1.61)
ReadLine support available (try 'install Bundle::CPAN')

cpan>
		

cpan> install CPAN
cpan> install LWP
cpan> install Archive::Tar
cpan> install Archive::Zip
cpan> install Compress::Zlib
cpan> install Convert::TNEF
cpan> install Convert::UUlib
cpan> install MIME::Base64
cpan> install MIME::Parser
cpan> install MIME::Tools
cpan> install Mail::Internet
cpan> install Net::Server
cpan> install Net::SMTP
cpan> install Digest::MD5
cpan> install IO::Stringy
cpan> install Time::HiRes
cpan> install Unix::Syslog
		

cpan> install ExtUtils::MakeMaker
cpan> install File::Spec
cpan> install Pod::Usage
cpan> install HTML::Parser
cpan> install Sys::Syslog
cpan> install DB_File
cpan> install Net::DNS
cpan> install Mail::Audit
cpan> install Mail::Internet
cpan> install Net::SMTP
cpan> install Digest::SHA1 
cpan> install Net::Ident 
cpan> install IO::Socket::SSL
cpan> quit
		

Configuring Time::HiRes...
Looking for gettimeofday()... found.
Looking for setitimer()... found.
Looking for getitimer()... found.
You have interval timers (both setitimer and setitimer).
Looking for ualarm()... found.
Looking for usleep()... found.
Looking for nanosleep()... found.
You can mix subsecond sleeps with signals.
Checking if your kit is complete...
Looks good
Writing Makefile for Time::HiRes
Now you may issue 'make'.  Do not forget also 'make test'.

NOTE: if you get an error like this (the line number may vary):
Makefile:91: *** missing separator
then set the environment variable LC_ALL to "C" and retry
from scratch (re-run perl "Makefile.PL").
		

cpan> exit
[root@linuxas3 src]# export LC_ALL=C
[root@linuxas3 src]# echo ${LC_ALL}
C
[root@linuxas3 src]#
		

cpan> install Time::HiRes
  /usr/bin/make install  -- OK
		

[root@linuxas3 src]# cd amavisd-new-20030616
[root@linuxas3 amavisd-new-20030616]# groupadd sweep
[root@linuxas3 amavisd-new-20030616]# adduser vscan -g sweep -d /dev/null -s/bin/false
[root@linuxas3 amavisd-new-20030616]# adduser amavis

[root@linuxas3 amavisd-new-20030616]# patch -p0 <amavisd-new-courier.patch
patching file amavisd.conf
patching file amavisd

[root@linuxas3 amavisd-new-20030616]# mkdir /var/amavis
[root@linuxas3 amavisd-new-20030616]# chown amavis:amavis /var/amavis
[root@linuxas3 amavisd-new-20030616]# chmod 750 /var/amavis

[root@linuxas3 amavisd-new-20030616]# cp amavisd /usr/local/sbin/
[root@linuxas3 amavisd-new-20030616]# chown root /usr/local/sbin/amavisd
[root@linuxas3 amavisd-new-20030616]# chmod 755  /usr/local/sbin/amavisd

[root@linuxas3 amavisd-new-20030616]# cp amavisd.conf /etc/
[root@linuxas3 amavisd-new-20030616]# chown root /etc/amavisd.conf
[root@linuxas3 amavisd-new-20030616]# chmod 644  /etc/amavisd.conf

[root@linuxas3 amavisd-new-20030616]# cp amavisd_init.sh /etc/init.d/amavisd
[root@linuxas3 amavisd-new-20030616]# chmod 744 /etc/init.d/amavisd
[root@linuxas3 amavisd-new-20030616]# chkconfig --add  amavisd
[root@linuxas3 amavisd-new-20030616]# chkconfig amavisd on
[root@linuxas3 amavisd-new-20030616]# vi /etc/init.d/amavisd
prog="/usr/local/sbin/amavisd"
[root@linuxas3 amavisd-new-20030616]# mkdir /var/virusmails
[root@linuxas3 amavisd-new-20030616]# chown -R amavis.amavis /var/virusmails（隔离区）

amavisd-new-courier.patch 这个补丁的作用是，stop　amavis时关闭uvsan.如果不打补丁，当你amavis stop后,10024没有被释放。
再次启动amavis会提示你有程序正在使用10024端口.
		

[root@linux amavisd-new-20030616]# vi /etc/amavisd.conf
#
# Section I - Essential daemon and MTA settings
#

$mydomain = 'example.net';      # (no useful default)
$myhostname = 'mail.example.net';  # fqdn of this host, default by uname(3)
$forward_method = 'smtp:127.0.0.1:10025';
$notify_method = $forward_method;

$max_servers  =  2;   # number of pre-forked children          (default 2)
$max_requests = 10;   # retire a child after that many accepts (default 10)

$child_timeout=5*60;  # abort child if it does not complete each task in n sec
                      # (default: 8*60 seconds)

#加入你的虚拟域.否则虚拟域邮箱不能anti-spam,如果你的虚拟域很多建议使用read_hash
@local_domains_acl = ( ".$mydomain", '.example.net', '.your.virualdomain' ); 
# 每个域名站一行.如果域名前有"."点,则包括他的子域.
#read_hash(\%local_domains, '/var/amavis/local_domains');

@bypass_virus_checks_acl = qw( . );  # uncomment to DISABLE anti-virus code
@local_domains_acl = ( ".$mydomain" );  # $mydomain and its subdomains

#
# Section IV - Notifications/DSN, BOUNCE/REJECT/DROP/PASS destiny, quarantine
#
#设置对垃圾邮件处理的方式，D_BOUNCE改为D_PASS
#(D_DISCARD表示丢弃,D_BOUNCE表示后来弹回信息, D_REJECT表示当时弹回信息,D_PASS表示允许通过)
$final_spam_destiny       = D_PASS;  # (defaults to D_REJECT) 
#
# Section V - Per-recipient and per-sender handling, whitelisting, etc.
#
read_hash(\%whitelist_sender, '/var/amavis/whitelist_sender');	#去掉注释
read_hash(\%blacklist_sender, '/var/amavis/blacklist_sender'); 	#自己添加
read_hash(\%spam_lovers, '/var/amavis/spam_lovers'); 			#自己添加

# SpamAssassin settings
$sa_auto_whitelist = 1;    # turn on AWL (default: false) #去掉“#”注释
$sa_spam_subject_tag = '***SPAM*** ';   # (defaults to undef, disabled)


$virus_admin = "virusalert\@$mydomain";
$spam_admin = "spamalert\@$mydomain";


@av_scanners = (

# ### http://www.clamav.net/
 ['Clam Antivirus-clamd',
   \&ask_daemon, ["CONTSCAN {}\n", "/var/run/clamav/clamd.sock"],
   qr/\bOK$/, qr/\bFOUND$/,
   qr/^.*?: (?!Infected Archive)(.*) FOUND$/ ],

# # NOTE: run clamd under the same user as amavisd;  match the socket
# # name (LocalSocket) in clamav.conf to the socket name in this entry
# # When running chrooted one may prefer: ["CONTSCAN {}\n","$MYHOME/clamd"],

		

[root@linuxas3 amavisd-new-20030616]# cd /etc/postfix/
[root@linuxas3 postfix]# vi master.cf
# amavis
smtp-amavis     unix    -       -       n       -       2       smtp
    -o smtp_data_done_timeout=1200
    -o smtp_send_xforward_command=yes
    -o disable_dns_lookups=yes
127.0.0.1:10025 inet    n       -       n       -       -       smtpd
    -o content_filter=
    -o local_recipient_maps=
    -o relay_recipient_maps=
    -o smtpd_restriction_classes=
    -o smtpd_client_restrictions=
    -o smtpd_helo_restrictions=
    -o smtpd_sender_restrictions=
    -o smtpd_recipient_restrictions=permit_mynetworks,reject
    -o mynetworks=127.0.0.0/8
    -o strict_rfc821_envelopes=yes
    -o smtpd_error_sleep_time=0
    -o smtpd_soft_error_limit=1001
    -o smtpd_hard_error_limit=1000
		

将 /etc/amavisd.conf 的 $max_servers 数字加大，预设是 2。
然后将该数字映到 /etc/postfix/master.cf 的 smtp-amavis 。
例：
$max_servers = 4

smtp-amavis     unix    -       -       n       -       4       smtp
上面smtp-amavis 中的 n 选项是chroot功能
y启用、n关闭。
然后重新reload postfix和amavisd即可!
注：做系统管理最忌重启.很多人喜欢stop重start，其实用reload重新载入配置文件就要以．这样的好处是不会中断会话．
		

#============ Amavis ================
soft_bounce=yes
content_filter = smtp-amavis:[127.0.0.1]:10024