安装内容过滤反垃圾邮件

1、安装软件包
mail:~# apt-get install amavisd-new spamassassin clamav clamav-daemon clamav-freshclam arc bzip2 lzop zoo cpio
在/etc/postfix/main.cf 加入
content_filter = smtp-amavis:[127.0.0.1]:10024

在/etc/postfix/master.cf 加入
smtp-amavis unix -   -   n   -     2 smtp
    -o smtp_data_done_timeout=1200
    -o disable_dns_lookups=yes

127.0.0.1:10025 inet n -     n     -     - smtpd
    -o content_filter=
    -o local_recipient_maps= C,p)d#K  
    -o relay_recipient_maps= Jt[W:o  
    -o smtpd_restriction_classes= PoV5dxl  
    -o smtpd_client_restrictions= pg ol>hx  
    -o smtpd_helo_restrictions= 6 4RS  
    -o smtpd_sender_restrictions= GzR9f f"M  
    -o smtpd_recipient_restrictions=permit_mynetworks,reject M=Q >Vq, x  
    -o mynetworks=127.0.0.0/8
配置amavisd-new ,编辑/etc/amavis/amavisd.conf,修改下面的内容。
大约在文件的78行位置。
$mydomain = 'mymail.org';
跟据你自己的需要修改发现病毒垃圾邮件等的处理方法。
D_DISCARD 丢弃，D_BOUNCE 退信，D_REJECT 拒绝，D_PASS 通过.
$final_virus_destiny = D_DISCARD; # (defaults to D_BOUNCE) >_[]'  
$final_banned_destiny = D_BOUNCE; # (defaults to D_BOUNCE) eKp(^" qw  
$final_spam_destiny = D_REJECT; # (defaults to D_REJECT) - ?0qz[

配置spamassassin,修改/etc/default/spamassassin Fv
ENABLED=1

2、让他随系统启动。
A、配置clamav 以支持amavisd-new 杀毒
编辑/etc/clamav/clamd.conf,将User clamav 改为
User amavis
B、修改目录的权限
mail:/etc/clamav# chown -R amavis:amavis /var/log/clamav/ $8z CxZh  
mail:/etc/clamav# chown -R amavis:amavis /var/run/clamav/ @q 0:kCd  
mail:/etc/clamav# chown -R amavis:amavis /var/lib/clamav K2( qo]  
编辑/etc/clamav/freshclam.con,将DatabaseOwner clamav改为
DatabaseOwner amavis
C、重启服务
mail:/etc/clamav# /etc/init.d/clamav-daemon restart z?MeK}rKZ
mail:/etc/clamav# /etc/init.d/clamav-freshclam restart 6i1ht\1v4  
D、发病毒测试
mail:/var/run/clamav# telnet localhost 25 \+V&=&  
Trying 127.0.0.1... }.B1T l  
Connected to localhost. )@$J .
  
Escape character is '^]'. P9omw--:  
220 extmail.org ESMTP Mail System oLIgge  
ehlo test a6g3"AHm-  
250-mail.extmail.org dF0.Y>^  
250-PIPELINING r(zUAM6o  
250-SIZE 14680064 /UN%Qd3  
250-VRFY f{ePhQI_  
250-ETRN A%Lf5Ij  
250-AUTH LOGIN PLAIN X Yt#_We  
250-AUTH=LOGIN PLAIN --)\eeL]"|  
250 8BITMIME ]u./=.wN  
mail from:<test@test.com> Fljz9>>-j  
250 Ok UbDwak9  
rcpt to:<test@extmail.org> p!\a4brH  
250 Ok iI*+d$8  
data 9ul..:L  
354 End data with CR>LF>.CR>LF> b ?`^ ,0  
X5O!P%@AP[4\PZX54(P^)7CC)7}$EICAR-STANDARD-ANTIVIRUS-TEST-FILE!$H+H*
. 2 </H. [  
250 Ok: queued as 8032C31B8B MF2<>H$u  
quit ;]e&s#&  
221 Bye x7DL9ev  
Connection closed by foreign host. `m_0;{4B

所产生的mail.log
May 20 22:51:43 mail postfix/smtpd[3362]: connect from localhost[127.0.0.1] SjMra [mT  
May 20 22:52:07 mail postfix/smtpd[3362]: 8032C31B8B: client=localhost[127.0.0.1] Yi!
V*ZZz  
May 20 22:52:18 mail postfix/cleanup[3368]: 8032C31B8B: message-id=20060520145157.8032C31B8B@mail.extmail.org> 8*@uG4  
May 20 22:52:18 mail postfix/qmgr[2900]: 8032C31B8B: from=test@test.com>, size=392, nrcpt=1 (queue active) FJ;?mA13  
May 20 22:52:18 mail postfix/smtpd[3371]: connect from localhost[127.0.0.1] uQJ@: L  
May 20 22:52:18 mail postfix/smtpd[3371]: 46E6831B8C: client=localhost[127.0.0.1] 1sMG/-;G5  
May 20 22:52:18 mail postfix/cleanup[3368]: 46E6831B8C: message-id=VA02687-02@mail.extmail.org> /:" )O lw  
May 20 22:52:18 mail postfix/qmgr[2900]: 46E6831B8C: from=>, size=2268, nrcpt=1 (queue active) o cBzX" lt  
May 20 22:52:18 mail amavis[2687]: (02687-02) INFECTED (Eicar-Test-Signature), test@test.com> -> test@extmail.org>, quarantine virus-20060520-225218-02687-02, Message-ID: 20060520145157.8032C31B8B@mail.extmail.org>, Hits: - aD%} `\l  
May 20 22:52:18 mail postfix/smtp[3370]: 8032C31B8B: to=test@extmail.org>, relay=127.0.0.1[127.0.0.1], delay=21, status=sent (250 2.7.1 Ok, discarded, id=02687-02 - VIRUS: Eicar-Test-Signature) D"<5;_?  
May 20 22:52:18 mail postfix/qmgr[2900]: 8032C31B8B: removed 4[v~8N{"  
May 20 22:52:18 mail postfix/smtpd[3371]: disconnect from localhost[127.0.0.1] X:VZ ("U  
May 20 22:52:20 mail postfix/smtpd[3362]: disconnect from localhost[127.0.0.1] Ng3huZh"(