CentOS6.4+LAMP+Postfix+Dovecot+Postfixadmin+Roundcubemail 打造企业级邮件服务...

jixuji

大纲

十二、安装并配置病毒扫描与垃圾邮件过滤

十三、安装并配置managesieve插件

十四、常见问题分析

说明：我们继续接着上一博文继续往下面说，首先我们来简单回忆一下我们上一篇博文的主要内容，我们说明了mail架构的主要部件，整个mail系统的工作流程，重点对比了，常规mail架构与精简mail架构的区别，重点说明了dovecot的优点，不仅能提供SASL认证，还是提供LDA功能，且效率大大的提高，不会占用太多有内存资源，然后我们具体演示了精简mail架构的配置过程，包括LAMP环境的搭建、Postfix配置、Dovecot配置、Postfixadmin配置、以及Roundcubemail的配置，完整搭建了整个邮件系统，但没有演示反垃圾邮件与邮件杀毒，在这一篇博文中我们重点讲解，反垃圾邮件与邮件杀毒，还有常见问题分析，好了下面我们就来说一说，嘿嘿！

十二、安装并配置病毒扫描与垃圾邮件过滤

[Shell] 纯文本查看 复制代码

1.安装安amavisd-new、clamav及spamassassin
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[iyunv@mail ~]# yum install -y  amavisd-new clamav clamav-devel clamd spamassassin
说明，amavisd-new、clamav及spamassassin可从RPMForge软件仓库安装，想想当年我们手动安装perl模块果，几十个模块一个个安装那叫一个苦B啊，嘿嘿，现在好了可以用yum直接安装，那叫一个爽！
2.查看amavisd-new、clamav及spamassassin开机自启动

[iyunv@mail ~]# chkconfig --list | grep "amavisd\|clamd\|spamassassin" 
amavisd         0:off   1:off   2:on    3:on    4:on    5:on    6:off  
clamd           0:off   1:off   2:on    3:on    4:on    5:on    6:off  
spamassassin    0:off   1:off   2:off   3:off   4:off   5:off   6:off  
[iyunv@mail ~]#
大家可以看到spamassassin是个服务是停止的开机没有启动，是因为amavisd-new直接将spamassassin作为一个模块使用，所以不需要守护进程，自然开机不需要启动，嘿嘿！
3.修改SpamAssassin配置文件

SpamAssassin作为amavisd-new的模块是需要特别配置，只要安装就行，但是你也可以定制它通过修改
[iyunv@mail ~]# vim /etc/mail/spamassassin/local.cf
# These values can be overridden by editing ~/.spamassassin/user_prefs.cf  
# (see spamassassin(1) for details)
# These should be safe assumptions and allow for simple visual sifting 
# without risking lost emails.
required_hits 5 
report_safe 0  
rewrite_header Subject [SPAM]
我这里只是列出为给大家看一下，有需要的博友自行修改，我这里就不修改了！
4.修改ClamAV配置文件/etc/clamd.conf
说明,ClamAV的设定存放在/etc/clamd.conf内,我们修改/etc/clamd.conf配置文件让ClamAV知道，Amavisd-new将会利用本地的UNIX通讯端与它通信而不是利用tcp端口来与它通信！

[iyunv@mail ~]# vim /etc/clamd.conf
#利用本地通信
LocalSocket /var/run/clamav/clamd.sock
#注释掉TCP通信端口
#TCPSocket 3310
5.修改Amavisd-new配置文件/etc/amavisd.conf
(1).通过去除以下数行的注释来停止检查病毒域垃圾邮件（由于下面数行默认是被注释掉的，因此病毒及垃圾邮件在预设中默认是被启动的）

[iyunv@mail ~]# vim /etc/amavisd.con
# @bypass_virus_checks_maps = (1);  # controls running of anti-virus code 
# @bypass_spam_checks_maps  = (1);  # controls running of anti-spam code  
# $bypass_decode_parts = 1;         # controls running of decoders&dearchivers
(2).接着可以看到下面几行

$max_servers = 2;            # num of pre-forked children (2..30 is common), -m 
$daemon_user  = "amavis";     # (no default;  customary: vscan or amavis), -u  
$daemon_group = "amavis";     # (no default;  customary: vscan or amavis), -g  
$inet_socket_port = 10024;   # listen on this local TCP port(s)
# $notify_method  = 'smtp:[127.0.0.1]:10025'; 
# $forward_method = 'smtp:[127.0.0.1]:10025';  # set to undef with milter!
说明，
$max_servers 设定同步执行的Amavisd-new进程数量，而且必须与/etc/postfix/master.cf内的amavisfeed服务的maxproc中相符合
$daemon_user及$daemon_group应该用来匹配Amavisd-new的用户及群组
$inet_socket_port   定义Amavisd-new将会在哪一个tcp端口接纳来自Postfix的连接
$notify_method及$forward_method定义Amavisd-new把邮件重新注入Postfix的途径
(3).以下是必须修改项

$mydomain = 'free.com';  #我这里是free.com域             
$MYHOME = '/var/amavis';                  
$helpers_home = "$MYHOME/var";            
$lock_file = "$MYHOME/var/amavisd.lock";  
$pid_file  = "$MYHOME/var/amavisd.pid";  
$myhostname = 'mail.free.com'; #我这里是mail.free.com主机
(4).下面是SpamAssassin设定来替换预设的SpamAssassin设置
$sa_tag_level_deflt  = 2.0;  # add spam info headers if at, or above that level 
$sa_tag2_level_deflt = 6.2;  # add 'spam detected' headers at that level  
$sa_kill_level_deflt = 6.9;  # triggers spam evasive actions (e.g. blocks mail)  
$sa_dsn_cutoff_level = 10;   # spam level beyond which a DSN is not sent  
$sa_crediblefrom_dsn_cutoff_level = 18; # likewise, but for a likely valid From  
# $sa_quarantine_cutoff_level = 25; # spam level beyond which quarantine is off  
$penpals_bonus_score = 8;    # (no effect without a @storage_sql_dsn database)  
$penpals_threshold_high = $sa_kill_level_deflt;  # don't waste time on hi spam  
$bounce_killer_score = 100;  # spam score points to add for joe-jobbed bounces
$sa_mail_body_size_limit = 400*1024; # don't waste time on SA if mail is larger 
$sa_local_tests_only = 0;    # only tests which do not require internet access?
说明，默认不需要修改但你得知道它们和意义，可以方便的帮助我们设置垃圾邮件‘
$sa_tag_level_deflt  指定Amavisd-new由哪一个级别开始写入X-Spam-Flag、X-Spam-Score、X-Spam-Status等垃圾邮件资讯标头，假如你想为所有邮件加入资讯标头，请把此值设为 -999   
$sa_tag2_level_deflt  指定由哪一个级别开始在垃圾邮件的标头上标签它们    
$sa_kill_level_deflt  指定Amavisd-new由哪一个级别开始拦截和扣留邮件。这个用途很大，因为SpamAssassin在预设情况下不会这样做    
$sa_dsn_cutoff_level  指定由哪一个级别开始寄件失败通告不会被发送给寄件人。由于多数垃圾邮件寄件者的地址都是伪造的，不为明显的垃圾邮件发送寄件失败通告是最合理的，要不然你只会加剧反向散寄的问题    
$sa_quarantine_cutoff_level  指定哪一个级别开始不必扣留垃圾邮件。这个选项预设是被注释掉的，意思是所有邮件都会被扣留
(5).下面是发送通告的邮件地址（默认是管理员邮箱，接收垃圾邮件通告的邮箱）

$virus_admin               = "virusalert\@$mydomain";  # notifications recip. 
$mailfrom_notify_admin     = "virusalert\@$mydomain";  # notifications sender  
$mailfrom_notify_recip     = "virusalert\@$mydomain";  # notifications sender  
$mailfrom_notify_spamadmin = "spam.police\@$mydomain"; # notifications sender
修改为，

$virus_admin               = "postmaster\@$mydomain";  # notifications recip. 
$mailfrom_notify_admin     = "postmaster\@$mydomain";  # notifications sender  
$mailfrom_notify_recip     = "postmaster\@$mydomain";  # notifications sender  
$mailfrom_notify_spamadmin = "postmaster\@$mydomain"; # notifications sender
(6).设置ClamAV的部分

# ### [url]http://www.clamav.net/[/url]
#['ClamAV-clamd',  
#  \&ask_daemon, ["CONTSCAN {}\n", "/var/run/clamav/clamd.sock"],  
#  qr/\bOK$/m, qr/\bFOUND$/m,  
#  qr/^.*?: (?!Infected Archive)(.*) FOUND$/m ],
修改为，   
#去掉相关注释就行

# ### [url]http://www.clamav.net/[/url]
 ['ClamAV-clamd',  
   \&ask_daemon, ["CONTSCAN {}\n", "/var/run/clamav/clamd.sock"],  
   qr/\bOK$/m, qr/\bFOUND$/m,
   qr/^.*?: (?!Infected Archive)(.*) FOUND$/m ],
说明，/var/run/clamav/clamd.sock这个设定必须与我们先前在/etc/clamd.conf内输入的LocalSocket /var/run/clamav/clamd.sock设定相一致。
6.修改Postfix配置文件
(1).修改/etc/postfix/master.cf

[iyunv@mail ~]# vim /etc/postfix/master.cf
# ========================================================================== 
# # service type  private unpriv  chroot  wakeup  maxproc command + args  
# #               (yes)   (yes)   (yes)   (never) (100)  
# # ==========================================================================  
# #  
amavisfeed unix    -       -       n       -       2     smtp  
            -o smtp_data_done_timeout=1200  
            -o smtp_send_xforward_command=yes  
            -o smtp_tls_note_starttls_offer=no  
            -o disable_dns_lookups=yes  
            -o max_use=20
说明，请注意在maxproc栏内的数值 2 必须要与/etc/amavisd.conf内的$max_servers设定一致。有关各选项的详细解释请参阅Amavisd-new的文档（vim /usr/share/doc/amavisd-new-2.8.0/README.postfix）。然后我们定义一个专用的服务把邮件重新注入Postfix。我们为此在/etc/postfix/master.cf内加入一个在localhost(127.0.0.1)的tcp 10025端口（/etc/amavisd.conf的预设值）上监听的smtp服务：

# ==========================================================================
# # service type  private unpriv  chroot  wakeup  maxproc command + args 
# #               (yes)   (yes)   (yes)   (never) (100) 
# # ========================================================================== 
127.0.0.1:10025 inet n    -       n       -       -     smtpd 
            -o content_filter= 
            -o smtpd_delay_reject=no 
            -o smtpd_client_restrictions=permit_mynetworks,reject 
            -o smtpd_helo_restrictions= 
            -o smtpd_sender_restrictions= 
            -o smtpd_recipient_restrictions=permit_mynetworks,reject 
            -o smtpd_data_restrictions=reject_unauth_pipelining 
            -o smtpd_end_of_data_restrictions= 
            -o smtpd_restriction_classes= 
            -o mynetworks=127.0.0.0/8 
            -o smtpd_error_sleep_time=0 
            -o smtpd_soft_error_limit=1001
            -o smtpd_hard_error_limit=1000
            -o smtpd_client_connection_count_limit=0 
            -o smtpd_client_connection_rate_limit=0 
            -o receive_override_options=no_header_body_checks,no_unknown_recipient_checks,no_milters,no_address_mappings
            -o local_header_rewrite_clients= 
            -o smtpd_milters= 
            -o local_recipient_maps=

注意，以上两项首行前面一定不能有空格，否则会出错！！！
(2).修改/etc/postfix/main.cf加入以下设定来启用邮件过滤

[iyunv@mail ~]# vim /etc/postfix/main.cf
#filter mail
content_filter = amavisfeed:[127.0.0.1]:10024
(3).重启postfix服务
1
2
3
[iyunv@mail ~]# service postfix restart 
Shutting down postfix:                                     [  OK  ]  
Starting postfix:                                          [  OK  ]
7.启动clamd及amavisd服务：

[iyunv@mail ~]# service clamd start 
Starting Clam AntiVirus Daemon: LibClamAV Warning: **************************************************  
LibClamAV Warning: ***  The virus database is older than 7 days!  ***  
LibClamAV Warning: ***   Please update it as soon as possible.    ***  
LibClamAV Warning: **************************************************  
                                                          [  OK  ]
[iyunv@mail ~]# service amavisd start 
Starting Mail Virus Scanner (amavisd):                     [  OK  ]  
[iyunv@mail ~]#
9.测试
(1).利用telnet测试amavisd这个服务正在127.0.0.1:10024上监听

[iyunv@mail ~]# telnet localhost 10024 
Trying ::1...  
telnet: connect to address ::1: Connection refused  
Trying 127.0.0.1...  
Connected to localhost.  
Escape character is '^]'.  
220 [127.0.0.1] ESMTP amavisd-new service ready  
ehlo free.com  
250-[127.0.0.1]  
250-VRFY  
250-PIPELINING  
250-SIZE  
250-ENHANCEDSTATUSCODES  
250-8BITMIME  
250-DSN  
250 XFORWARD NAME ADDR PORT PROTO HELO IDENT SOURCE  
quit  
221 2.0.0 [127.0.0.1] amavisd-new closing transmission channel  
Connection closed by foreign host.  
[iyunv@mail ~]#

(2).测试Postfix的smtpd正在127.0.0.1:10025上监听

[iyunv@mail ~]# telnet localhost 10025 
Trying ::1...  
telnet: connect to address ::1: Connection refused  
Trying 127.0.0.1...  
Connected to localhost.  
Escape character is '^]'.  
220 mail.free.com ESMTP Postfix  
ehlo free.com 
250-mail.free.com  
250-PIPELINING  
250-SIZE 10240000  
250-VRFY  
250-ETRN  
250-AUTH PLAIN LOGIN CRAM-MD5  
250-AUTH=PLAIN LOGIN CRAM-MD5  
250-ENHANCEDSTATUSCODES  
250-8BITMIME  
250 DSN  
quit  
221 2.0.0 Bye  
Connection closed by foreign host.  
[iyunv@mail ~]
(3).垃圾邮件的测试
[iyunv@mail ~]#  cd /usr/share/doc/spamassassin-3.3.1/
[iyunv@mail spamassassin-3.3.1]# sendmail [email]test@free.com[/email] < sample-spam.txt     
[iyunv@mail spamassassin-3.3.1]# tail -f /var/log/maillog  
Jul 11 09:15:46 mail postfix/cleanup[17529]: 6AB1E23776: message-id=<[email]GTUBE1.1010101@example.net[/email]>  
Jul 11 09:15:46 mail postfix/qmgr[17492]: 6AB1E23776: from=<[email]root@free.com[/email]>, size=1657, nrcpt=1 (queue active)  
Jul 11 09:15:46 mail amavis[17520]: (17520-01) Passed SPAM {RelayedTaggedInbound,Quarantined}, <[email]root@free.com[/email]> -> <[email]test@free.com[/email]>, quarantine: spam-rnWvh9AXIRB2.gz, Message-ID: <[email]GTUBE1.1010101@example.net[/email]>, mail_id: rnWvh9AXIRB2, Hits: 1005.069, size: 933, queued_as: 6AB1E23776, 2403 ms  
Jul 11 09:15:46 mail postfix/smtp[17533]: D927923774: to=<[email]test@free.com[/email]>, relay=127.0.0.1[127.0.0.1]:10024, delay=2.7, delays=0.21/0.07/0.02/2.4, dsn=2.0.0, status=sent (250 2.0.0 from MTA(smtp:[127.0.0.1]:10025): 250 2.0.0 Ok: queued as 6AB1E23776)\

从日志中我们可以看出进行了垃圾邮件过滤，嘿嘿，但效果不明显我们用Webmail测试一下，效果如下,

这就是我们刚才测试的垃圾邮件，嘿嘿！下面我们再发一封测试一下，

这是我们用test@free.com发给loda@free.com的邮件，我们用loda@free.com接收一下看看效果，

可以看到，当loda接收到这封邮件时，被标记为垃圾邮件！至此所有演示全部完成，嘿嘿，下面我们查看一下所启动的所有服务！

[Shell] 纯文本查看 复制代码

10.查看所有的服务与端口

[iyunv@mail spamassassin-3.3.1]# netstat -ntulp 
Active Internet connections (only servers)  
Proto Recv-Q Send-Q Local Address               Foreign Address             State       PID/Program name 
tcp        0      0 0.0.0.0:3306                0.0.0.0:*                   LISTEN      1188/mysqld       
tcp        0      0 0.0.0.0:110                 0.0.0.0:*                   LISTEN      1211/dovecot      
tcp        0      0 0.0.0.0:143                 0.0.0.0:*                   LISTEN      1211/dovecot      
tcp        0      0 0.0.0.0:22                  0.0.0.0:*                   LISTEN      1050/sshd         
tcp        0      0 0.0.0.0:25                  0.0.0.0:*                   LISTEN      17489/master      
tcp        0      0 0.0.0.0:993                 0.0.0.0:*                   LISTEN      1211/dovecot      
tcp        0      0 0.0.0.0:995                 0.0.0.0:*                   LISTEN      1211/dovecot      
tcp        0      0 127.0.0.1:10024             0.0.0.0:*                   LISTEN      17517/amavisd (mast   
tcp        0      0 127.0.0.1:10025             0.0.0.0:*                   LISTEN      17489/master      
tcp        0      0 :::80                       :::*                        LISTEN      16150/httpd       
tcp        0      0 :::22                       :::*                        LISTEN      1050/sshd         
tcp        0      0 :::25                       :::*                        LISTEN      17489/master      
udp        0      0 0.0.0.0:68                  0.0.0.0:*                               16825/dhclient    
[iyunv@mail spamassassin-3.3.1]#

十三、安装并配置managesieve插件

说明，managesieve插件实现邮件过滤和Vacation功能

[Shell] 纯文本查看 复制代码

1.在Doevecot2.0之后的版本，如果需要做邮件过滤的功能需要dovecot-pigeonhole扩展包的支持，
1
[iyunv@mail ~]# yum install -y dovecot-pigeonhole
2.配置dovecot配置文件
[iyunv@mail ~]# vim /etc/dovecot/dovecot.conf
protocols = imap pop3 sieve
[iyunv@mail ~]# vim /etc/dovecot/conf.d/15-lda.conf
mail_plugins = quota sieve
3.重新启动dovecot
[iyunv@mail ~]# service dovecot restart 
Stopping Dovecot Imap:                                     [  OK  ]  
Starting Dovecot Imap:                                     [  OK  ]
4. 查看Dovecot监听4190端口
[iyunv@mail ~]# netstat -ntulp | grep 4190 
tcp        0      0 0.0.0.0:4190                0.0.0.0:*                   LISTEN      17998/dovecot     
[iyunv@mail ~]#
5.managesieve配置文件修改，将模板复制成config.inc.php，做如下修改
[iyunv@mail ~]# cd /var/www/html/webmail/plugins/managesieve/ 
[iyunv@mail managesieve]# ls  
Changelog  config.inc.php.dist  lib  localization  managesieve.js  managesieve.php  package.xml  skins  tests  
[iyunv@mail managesieve]# cp config.inc.php.dist config.inc.php  
[iyunv@mail managesieve]# vim config.inc.php  
#修改端口为
$rcmail_config['managesieve_port'] = 4190;
6.在主配置文件中使插件生效
[iyunv@mail ~]# vim  /var/www/html/webmail/config/main.inc.php
$rcmail_config['plugins'] = array('managesieve');

7.效果测试

好了测试成功！Roundcubemail 插件很多，有需要的朋友自行增加就行,^_^……

十四、常见问题分析

说明,说实话这个常见问题分析真不好写，因为我并不知道大家会出什么问题，我这里只说明一下我遇到的一些问题！

1.复制的问题

安装或配置时，很多博友都喜欢复制博客中的内容，会带有一此空格或其它字符，配置文件对这些字符特别的敏感有一点字符可能就支出错，这个特别注意，我自己也遇到过好多次，明明配置都一样为什么你行我不行呢？嘿嘿，这个大家得特别留心！

2.postfix 相关

要查看Postfix的当前主要配置文件的存放路径：postconf -n

系统日志：tail -f /var/log/messages   
邮件日志：tail -f /var/log/maillog     
3.apache相关   
apache相关：tail -f /usr/local/httpd/logs/error_log tail -f /usr/local/httpd/logs/suexec_log

注意，大家可以看到我这里apache运行的用户和组是vmail注意修改

[backcolor=white !important]

[Shell] 纯文本查看 复制代码

[iyunv@mail ~]# ps aux | grep httpd 
root     16150  0.0  0.0 317840   100 ?        Ss   05:59   0:01 /usr/sbin/httpd  
vmail    16152  0.0  6.5 430908 15428 ?        S    05:59   0:04 /usr/sbin/httpd  
vmail    16153  0.0  7.2 429640 17184 ?        S    05:59   0:04 /usr/sbin/httpd  
vmail    16154  0.0  6.2 428340 14884 ?        S    05:59   0:04 /usr/sbin/httpd  
vmail    16155  0.0  6.6 428624 15672 ?        S    05:59   0:04 /usr/sbin/httpd  
vmail    16156  0.0  5.9 425644 14120 ?        S    05:59   0:04 /usr/sbin/httpd  
vmail    16157  0.0  5.9 425368 14124 ?        S    05:59   0:04 /usr/sbin/httpd  
vmail    16158  0.0  7.2 428068 17224 ?        S    05:59   0:04 /usr/sbin/httpd  
vmail    16159  0.0  4.1 420924  9792 ?        S    05:59   0:04 /usr/sbin/httpd  
vmail    17061  0.0  6.4 427112 15280 ?        S    07:04   0:03 /usr/sbin/httpd  
vmail    17545  0.0  6.2 426612 14804 ?        S    09:18   0:02 /usr/sbin/httpd  
root     18152  0.0  0.3 103236   864 pts/1    S+   10:02   0:00 grep httpd  
[iyunv@mail ~]#
修改方法，
[iyunv@mail ~]# vim /etc/httpd/conf/httpd.conf
User vmail 
Group vmail
4.mysql相关   
mysql相关： tail -f /usr/local/mysql/data/linux.linux.com.err
5.垃圾邮件相关   
测试amavisd： amavisd -d config debug-sa
[iyunv@mail ~]# amavisd -d config debug-sa  
The amavisd daemon is already running, PID: [17517]
测试spam： spamassassin -D –lint 
1
[iyunv@mail ~]# spamassassin -D --lint
6.clamd相关
查看  /var/log/clamav/clamd.log
[iyunv@mail ~]# tail -f /var/log/clamav/clamd.log 
Thu Jul 11 09:10:39 2013 -> PDF support enabled.  
Thu Jul 11 09:10:39 2013 -> HTML support enabled.  
Thu Jul 11 09:10:39 2013 -> Self checking every 600 seconds.  
Thu Jul 11 09:22:02 2013 -> No stats for Database check - forcing reload  
Thu Jul 11 09:22:10 2013 -> Reading databases from /var/clamav  
Thu Jul 11 09:22:14 2013 -> Database correctly reloaded (1258735 signatures)  
Thu Jul 11 09:39:24 2013 -> SelfCheck: Database status OK.  
Thu Jul 11 09:49:24 2013 -> SelfCheck: Database status OK.  
Thu Jul 11 09:59:24 2013 -> SelfCheck: Database status OK.  
Thu Jul 11 10:09:24 2013 -> SelfCheck: Database status OK.
更新病毒库 freshclam
[iyunv@mail clamav]# freshclam 
ClamAV update process started at Thu Jul 11 10:13:58 2013  
WARNING: Your ClamAV installation is OUTDATED!  
WARNING: Local version: 0.97.7 Recommended version: 0.97.8  
DON'T PANIC! Read [url]http://www.clamav.net/support/faq[/url]
main.cvd is up to date (version: 54, sigs: 1044387, f-level: 60, builder: sven)  
WARNING: getfile: daily-15077.cdiff not found on remote server (IP: 202.118.1.40)  
WARNING: getpatch: Can't download daily-15077.cdiff from db.cn.clamav.net  
WARNING: getfile: daily-15077.cdiff not found on remote server (IP: 200.236.31.1)  
WARNING: getpatch: Can't download daily-15077.cdiff from db.cn.clamav.net  
WARNING: getpatch: Can't download daily-15077.cdiff from db.cn.clamav.net  
WARNING: Incremental update failed, trying to download daily.cvd  
Downloading daily.cvd [100%]  
daily.cvd updated (version: 17485, sigs: 1458626, f-level: 63, builder: guitar)  
Downloading bytecode.cvd [100%]  
bytecode.cvd updated (version: 214, sigs: 41, f-level: 63, builder: neo)  
Database updated (2503054 signatures) from db.cn.clamav.net (IP: 202.118.1.40)  
Clamd successfully notified about the update.  
[iyunv@mail clamav]#
查看更新日志
1
tail -f /var/log/clamav/freshclam.log

7.dovecot 相关

测试：telnet localhost 110  telnet localhost 143

8.总结

若发现某个服务个有问题或不能收发邮件，最好的方法就是查看相关日志文件，基本都上都是有记录的，只要发现错误,我们便能很快的解决问题！本人水平有限，只能说这么多了，嘿嘿！

lilingjie2015

有道理。。。

ddsdjn

帮你顶下哈！！

314598340

小手一抖，钱钱到手！

天成1

你的丑和你的脸没有关系。。。。。。

woyoudn

生，容易。活，容易。生活，不容易。

苏泽湛

不要在一棵树上吊死，在附近几棵树上多试试死几次~

xblang

好资源，必须支持楼主。