extmail邮件系统搭建
制作EMOS yum
1.wget ftp://www6.extmail.org/emos/EMOS_1.5_Beta2_x86_64.iso
2.mount -t iso9660 -o loop EMOS_1.5_Beta2_x86_64.iso /mnt/EMOS
3.yum install createrepo
4.cd /mnt&createrepo .
5.mkdir CentOS#mv *.repo ./CentOS
6.vi EMOS.repo
[EMOS]
name=EMOS
baseurl=file:///mnt/
enabled=1
gpgcheck=0
7.yum clean all&yum list 如果光盘中缺少的软件,可以切换回中科源进行更新
安装postfix
8.yum install postfix&checkconfig postfix on
9.rpm -e sendmail
10.postconf -n>/etc/postfix/main2.cf&mv main.cf main.cf.old&mv main2.cf main.cf
11.vi main.cf
# hostname
mynetworks = 127.0.0.1
myhostname = mail.extmail.org
mydestination = $mynetworks $myhostname
# banner
mail_name = Postfix - by extmail.org
smtpd_banner = $myhostname ESMTP $mail_name
# response immediately
smtpd_error_sleep_time = 0s
# Message and return code control
message_size_limit = 5242880
mailbox_size_limit = 5242880
show_user_unknown_table_name = no
# Queue lifetime control
bounce_queue_lifetime = 1d
maximal_queue_lifetime = 1d
安装courier-authlib
12.yum install courier-authlib&yum install courier-authlib-mysql
13.vi /etc/authlib/authmysqlrc
MYSQL_SERVER localhost
MYSQL_USERNAME extmail
MYSQL_PASSWORD extmail
MYSQL_SOCKET /var/lib/mysql/mysql.sock
MYSQL_PORT 3306
MYSQL_OPT 0
MYSQL_DATABASE extmail
MYSQL_USER_TABLE mailbox
MYSQL_CRYPT_PWFIELD password
MYSQL_UID_FIELD uidnumber
MYSQL_GID_FIELD gidnumber
MYSQL_LOGIN_FIELD username
MYSQL_HOME_FIELD homedir
MYSQL_NAME_FIELD name
MYSQL_MAILDIR_FIELD maildir
MYSQL_QUOTA_FIELD quota
MYSQL_SELECT_CLAUSE SELECT username,password,"",uidnumber,gidnumber,\
CONCAT('/home/domains/',homedir), \
CONCAT('/home/domains/',maildir), \
quota, \
name \
FROM mailbox \
WHERE username = '$(local_part)@$(domain)'
14.vi /etc/authlib/authdeamonrc
authmodulelist="authmysql"
authmodulelistorig="authmysql"
15.service courier-authlib start & chomd 755 /var/spool/authdaemon/
安装maildrop
16.yum install maildrop
17.vi /etc/postfix/master.cf
maildrop unix - n n - - pipe
flags=DRhu user=vuser argv=maildrop -w 90 -d ${user}@${nexthop} ${recipient} ${user} ${extension} {nexthop}
18.vi /etc/postfix/main.cf
maildrop_destination_recipient_limit=1
19.test #maildrop -v ,and diskplay License,see COPYing for additional information.
配置APACHE
20.vi /etc/httpd/conf/httpd.conf
NameVirualHost *:80
include conf/vhost_*.conf
21.vi vhost_extmail.conf
# VirtualHost for ExtMail Solution
<VirtualHost *:80>
ServerName mail.extmail.org
DocumentRoot /var/www/extsuite/extmail/html/
ScriptAlias /extmail/cgi/ /var/www/extsuite/extmail/cgi/
Alias /extmail /var/www/extsuite/extmail/html/
ScriptAlias /extman/cgi/ /var/www/extsuite/extman/cgi/
Alias /extman /var/www/extsuite/extman/html/
# Suexec config
SuexecUserGroup vuser vgroup
</VirtualHost>
22.chkconfig httpd on
安装EXTMAIL
23.yum install extsuite-webmail
24.cd /var/www/extsuite/extmail
25.cp webmail.cf.default webmail.cf
26.vi webmail.cf
SYS_MYSQL_USER=extmail
SYS_MYSQL_PASS=extmail
SYS_MYSQL_DB=extmail
27.chown -R vuser:vgroup /var/www/extsuite/extmail/cgi
安装EXTMAN
28.yum install extsuite-webman
29.chown -R vuser:vgroup /var/www/extsuite/extman/cgi/
30.mkdir /tmp/extman #chown -R vuser:vgroup /tmp/extman
安装MYSQL
31.yum install mysql-server & service mysqld start &chkconfig mysqld on
32.mysql -u root -p </var/www/extsuite/extman/docs/extmail.sql
33.mysql -u root -p </var/www/extsuite/extman/docs/init.sql
设置邮件虚拟域和虚拟用户配置文件
34.cd /var/www/extsuite/extman/docs
35.cp mysql_virtual_*_maps.cf /etc/postfix & rm mysql_virtual_limit_maps.cf
36.vi /etc/postfix/main.cf
# extmail config here
virtual_alias_maps = mysql:/etc/postfix/mysql_virtual_alias_maps.cf
virtual_mailbox_domains = mysql:/etc/postfix/mysql_virtual_domains_maps.cf
virtual_mailbox_maps = mysql:/etc/postfix/mysql_virtual_mailbox_maps.cf
virtual_transport = maildrop:
37.service postfix restart
38.测试extman登录,如果开启selinux,使用audit2allow等命令将现行规则导入内核
39.配置图形化日志/usr/local/mailgraph_ext/mailgraph-init start
/var/www/extsuite/extman/daemon/cmdserver --daemon
echo "/usr/local/mailgraph_ext/mailgraph-init start" >>/etc/rc.d/rc.local&echo "/var/www/extsuite/extman/daemon/cmdserver -v -d" >>/etc/rc.d/rc.local
安装配置cyrus-sasl
40.rpm -e cyrus-sasl --nodeps&yum install cyrus-sasl
vi /etc/postfix/main.cf
# smtpd related config smtpd_recipient_restrictions = permit_mynetworks, permit_sasl_authenticated, reject_non_fqdn_hostname, reject_non_fqdn_sender, reject_non_fqdn_recipient, reject_unauth_destination, reject_unauth_pipelining, reject_invalid_hostname, # SMTP sender login matching config smtpd_sender_restrictions = permit_mynetworks, reject_sender_login_mismatch, reject_authenticated_sender_login_mismatch, reject_unauthenticated_sender_login_mismatch smtpd_sender_login_maps = mysql:/etc/postfix/mysql_virtual_sender_maps.cf, mysql:/etc/postfix/mysql_virtual_alias_maps.cf # SMTP AUTH config here broken_sasl_auth_clients = yes smtpd_sasl_auth_enable = yes smtpd_sasl_local_domain = $myhostname smtpd_sasl_security_options = noanonymous41.vi /usr/lib/sasl2/smtpd.conf
pwcheck_method: authdaemond log_level: 3 mech_list: PLAIN LOGIN authdaemond_path:/var/spool/authdaemon/socketservice postfix start
Trying 127.0.0.1... Connected to localhost.localdomain (127.0.0.1). Escape character is '^]'. 220 mail.extmail.org ESMTP Postfix - by extmail.org ehlo demo.domain.tld << 输入内容 250-mail.extmail.org 250-PIPELINING 250-SIZE 10240000 250-VRFY 250-ETRN 250-AUTH LOGIN PLAIN 250-AUTH=LOGIN PLAIN 250-ENHANCEDSTATUSCODES 250-8BITMIME 250 DSN auth login << 输入内容 334 VXNlcm5hbWU6 cG9zdG1hc3RlckBleHRtYWlsLm9yZw== << 输入内容 334 UGFzc3dvcmQ6 ZXh0bWFpbA== << 输入内容 235 2.0.0 Authentication successful quit << 输入内容 221 2.0.0 Bye52.安装Spam_Locker
安装 重新下载编译imap4.2.0 ,EOMS光盘中的imap需要0.60以上的authlib,不与考虑。默认安装/usr/lib/courier-imap/
42.还原imapd/pop3d.dist,不启动imap服务,只启动pop3d,涉及到的AUTH 改为 LOGIN PLAIN
43.cp courier-imap.sysvinit /etc/rc.d/init.d/imapd #chmod 755 #chkconfig -add imapd
44.测试telnet localhost 110
Trying 127.0.0.1...
Connected to localhost.localdomain (127.0.0.1).
Escape character is '^]'.
+OK Hello there.
user [email protected] << 输入内容
+OK Password required.
pass extmail << 输入内容
+OK logged in.
list << 输入内容
+OK POP3 clients that break here, they violate STD53.
.
quit << 输入内容
+OK Bye-bye.
Connection closed by foreign host. 注意SMTP POP3测试前提存在extmail.org域及用户test
45.安装amavisd-new
shell
# yum install amavisd-new
设置相关目录权限:
shell
# chown -R amavis.amavis /var/spool/vscan/
46.配置SpamAssassin
Amavisd-new 通过Mail::SpamAssassin 模块来调用SA的功能,因此这里配置SA和常规配置SA软件有些区别,主要集中在修改local.cf文件上。
增加中文规则: 用于处理中文(简体)垃圾邮件。
shell
# wget -N -P /usr/share/spamassassin www.ccert.edu.cn/spam/sa/Chinese_rules.cf
设置规则自动更新:
shell
# /usr/bin/crontab -e
然后输入如下的内容:
0 0 1 * * wget -N -P /usr/share/spamassassin www.ccert.edu.cn/spam/sa/Chinese_rules.cf; /etc/init.d/amavisd restart
存盘退出即可。最后运行以下调试命令以确认amavisd没有错误:
shell
# /usr/sbin/amavisd -c /etc/amavisd.conf debug
如果没有异常提示或报错退出则表示一切都正常,按ctrl+c终止,然后正常启动,若提示pid不存在等错误,不必理会。
47.设置amavisd开机自启:
shell
# service amavisd start
# chkconfig amavisd on
48.安装ClamAV
shell
# yum install clamd
编辑clamd.conf文件
shell
# vi /etc/clamd.conf
去掉 ‘LocalSocket /var/run/clamav/clamd.sock’的注释,并注释掉 ‘TCPSocket 3310’,我们将使用unix socket而不是TCP,两者不可并存。
变动内容见下:
# Default: disabled
LocalSocket /var/run/clamav/clamd.sock
#TCPSocket 3310
设置相关目录权限:
将clamav加到amavis运行组里,并调整目录权限,否则clamav将无法扫描amavisd-new产生的临时文件
shell
# gpasswd -a clamav amavis
# usermod -G amavis clamav
# chown amavis.amavis /var/spool/vscan
# chmod 750 /var/spool/vscan
# chown amavis.amavis /var/spool/vscan/tmp
# chmod 750 /var/spool/vscan/tmp
默认的/var/spool/vscan 目录属性是:
drwxr-x--- 5 amavis amavis
对于clamav用户而言,则无任何权限访问该目录,因此maillog里amavisd-new会提示:
May 19 08:38:53 as3 amavis[1752]: (01752-01) ask_av (ClamAV-clamd) FAILED - unexpected result: /var/spool/vscan/tmp/amavis-20050519T
083853-01752/parts: Access denied. ERROR\n
May 19 08:38:53 as3 amavis[1752]: (01752-01) WARN: all primary virus scanners failed, considering backups
启动ClamAV及开机自启:
shell
# service clamd start
# freshclam �Cdaemon
49.配置amavisd.con文件
修改amavisd.conf
shell
# vi /etc/amavisd.conf
修改的主要参数如下:
$mydomain = 'extmail.org';
$db_home = "$MYHOME/db";
$lock_file = "$MYHOME/amavisd.lock"; # -L
$pid_file = "$MYHOME/amavisd.pid"; # -P
$myhostname = 'mail.extmail.org';
@local_domains_maps = qw(.);
@mynetworks = qw( 127.0.0.0/8 );
对本地发出的邮件不进行内容过滤
$policy_bank{'MYNETS'} = { # mail originating from @mynetworks
originating => 1, # is true in MYNETS by default, but let's make it explicit
os_fingerprint_method => undef, # don't query p0f for internal clients
allow_disclaimers => 1, # enables disclaimer insertion if available
bypass_spam_checks_maps => [1],
bypass_banned_checks_maps => [1],
bypass_header_checks_maps => [1],
};
$sa_spam_modifies_subj = 0; # 当邮件被认为是垃圾邮件时,是否修改邮件的主题
$remove_existing_x_scanned_headers= 1; # 凡是经过 Amavisd 过滤的邮件,都会在邮件头中被加入一行邮件头信息
$remove_existing_spam_headers = 1;
# 修改投递/拦截的方法:
$final_virus_destiny = D_DISCARD;
$final_banned_destiny = D_DISCARD;
$final_spam_destiny = D_PASS;
$final_bad_header_destiny = D_PASS;
# 配置Amavisd与Clamav结合
['ClamAV-clamd',
\&ask_daemon, ["CONTSCAN {}\n", "/var/run/clamav/clamd.sock"],
qr/\bOK$/, qr/\bFOUND$/,
qr/^.*?: (?!Infected Archive)(.*) FOUND$/ ],
);
@av_scanners_backup = (
['ClamAV-clamscan', 'clamscan',
"--stdout --no-summary -r --tempdir=$TEMPBASE {}",
[0], qr/:.*\sFOUND$/, qr/^.*?: (?!Infected Archive)(.*) FOUND$/ ],
);
amavisd.conf常用参数说明:
$max_servers = 10; 设置最大可使用的进程数
$sa_spam_subject_tag = '[SPAM] '; 加 [SPAM] 标记
$mydomain = 'mail.extmail.org'; 设置域名
$myhostname = 'mail.extmail.org'; 设置主机名
@local_domains_maps = qw(.); 对所有的域检查
$sa_tag2_level_deflt = 5.0; 超过这个分数,允许在邮件标题加入[SPAM] 标记
$sa_kill_level_deflt = 5.0; 超过这个分数,直接�⑿偶�备份后删除
$final_virus_destiny: 检测到病毒时的动作
$final_banned_destiny: 检测到受禁止的内容时的动作
$final_spam_destiny: 检测到垃圾邮件、广告邮件(spam)时的动作
$final_bad_header_destiny: 检测到不良信件时的动作
默认有以下几种动作:
D_PASS: 无论信件是否有问题,都会将信件发给收件人
D_DISCARD: 信件将被丢弃,并且不会告知收件人及发件人
D_BOUNCE: 信件不会发送给收件人,但会通知发件人邮件没有被投递
D_REJECT: 邮件不会被投递给收件人,但会通知发件人邮件被拒绝
注意事项:
上述$mydomain参数与$myhostname参数相同,主要是为了方便之后的病毒/垃圾汇报邮件发给系统管理员时,能投递到本地的别名里,再转交到虚拟域的特定用户。
50.配置Postfix 集成amavisd-new
增加邮件别名
shell
# vi /etc/postfix/aliases
增加如下信息,注意:默认的aliases数据库里已有一条virusalert的别名,请删除,再输入下面的别名记录,并确保所有记录都是唯一的:
virusalert: root
spam.police: root
postfix: [email protected]
保存并执行newaliases命令生成新的别名数据库,重新启动amavisd:
shell
# newaliases
# service amavisd restart
编辑master.cf文件:
shell
# vi /etc/postfix/master.cf
增加如下内容:
smtp-amavis unix - - n - 3 smtp
-o smtp_data_done_timeout=1200
-o smtp_send_xforward_command=yes
-o disable_dns_lookups=yes
-o max_use=10
127.0.0.1:10025 inet n - n - - smtpd
-o content_filter=
-o local_recipient_maps=
-o relay_recipient_maps=
-o smtpd_restriction_classes=
-o smtpd_client_restrictions=
-o smtpd_helo_restrictions=
-o smtpd_sender_restrictions=
-o smtpd_recipient_restrictions=permit_mynetworks,reject
-o mynetworks=127.0.0.0/8
-o strict_rfc821_envelopes=yes
-o smtpd_error_sleep_time=0
-o smtpd_soft_error_limit=1001
-o smtpd_hard_error_limit=1000
-o receive_override_options=no_unknown_recipient_checks,no_header_body_checks
编辑main.cf文件:
shell
# vi /etc/postfix/main.cf
增加如下内容:
# Content-Filter
content_filter = smtp-amavis:[127.0.0.1]:10024
receive_override_options = no_address_mappings
注意:receive_override_options 这里必须增加,禁止地址展开/影射,否则如果遇到别名的时候会引起冗余邮件的产生。
重启postfix :
shell
# service postfix restart
重新启动amavisd:
shell
# service amavisd restart
51.测试Clamav
shell
# telnet localhost 25
其过程如下:
Trying 127.0.0.1...
Connected to localhost.localdomain (127.0.0.1).
Escape character is '^]'.
220 mail.extmail.org ESMTP Postfix - by extmail.org
mail from:<[email protected]> << 输入内容
250 2.1.0 Ok
rcpt to:<[email protected]> << 输入内容
250 2.1.5 Ok
data << 输入内容
354 End data with .
X5O!P%@AP[4\PZX54(P^)7CC)7}$EICAR-STANDARD-ANTIVIRUS-TEST-FILE!$H+H* << 输入内容
.
250 2.0.0 Ok: queued as BC24E85260
quit << 输入内容
221 2.0.0 Bye
Connection closed by foreign host.
在邮件日志里,应该有相应的信息出现:
Mar 22 06:43:15 localhost amavis[15405]: (15405-01) Blocked INFECTED (Eicar-Test-Signature), [192.168.0.235] ->, quarantine:
virus-mI6vbjkWZ2Tz, Message-ID: <003401c88c1a$74706360$eb00a8c0@nbk00045>, mail_id: mI6vbjkWZ2Tz, Hits: -, size: 1757, 474 ms
如果看到类似这样的日志,表明Clamav+Amavisd-new工作正常。