Blueonyx 5.x 安装 OpenWebmail

其实安装方法很简单，但确实花了小弟不少时间，以下是详细过程：

平台： Blueonyx 5.6 + OpenWebmail 2.5.1

先从 http://updates.blueonyx.it/pub/BlueOnyx/ISO/

下载最新版本的 BlueOnyx ，这套系统还是免费的，前身就是大名鼎鼎的 Sun Cobalt ，当时开发出来是给 ICP 作为 Web host用，系统包括Email Server（SMTP/POP3/IMAP）、FTP Server 、DNS Server、Web Server 全部包括，最适用于ICP主机出租业务了；介绍就到这里，继续安装。

安装OpenWebmail

Blueonyx 的安装就不再说明了，因为就是光盘安装的很简单，只要稍懂英文真的没有什么难度了！系统是“定制”版本的 CentOS5 ，所以安装软件与CentOS安装没有什么区别，简单点就是取得“软件源库” repo 文件，然后 yum install xxxxxx 即可，跟”大便“的 apt-get 一样很给力的
其实系统自带有 webmail 了，就是SquirrelMail ，但小弟用了Openwebmail快10年了，感觉很顺手，界面也很友好，功能也全部好用，所以先入为主吧，还是需要在这个系统上使用，所以才post该文！

下文内容参考自： http://coding.infoconex.com/page/Installing-OpenWebmail-on-BlueOnyx-server.aspx

1) Grab the latest install of openwebmail from: http://openwebmail.acatysmoof.com/

Note that I am installing version 2.5.3 however there are 2 versions currently available
- Official Version 2.5.3
- 3.0 Beta 4

2) 下载 openwebmail文件包到 /var/www

cd /var/www
wget http://openwebmail.acatysmoof.com/download/release/openwebmail-2.53.tar.gz
或者从 openwebmail 的官网下载最新的版本
http://openwebmail.org/openwebmail/download/release/openwebmail-2.53.tar.gz

3) 解压文件包

tar -xvzf openwebmail-2.53.tar.gz
This will extract files to 2 different directories
- /var/www/cgi-bin/openwebmail
- /var/www/data/openwebmail

4) 更改目录权限为 root:mail

chown root:mail /var/www/cgi-bin/openwebmail
chown root:mail /var/www/data/openwebmail

5) 安装Text::Iconv perl模块

yum install perl-Text-Iconv
或者直接下载rpm包安装
http://openwebmail.org/openwebmail/download/redhat/rpm/packages/centos5/
下载 perl-Text-Iconv/ 的rpm包到 Blueonyx 中，然后执行
# rpm -i perl-Text-Iconv.xx.xxx.rpm

6) 新建apache配置文件

新建 /etc/httpd/conf.d/httpd_openwebmail.conf
贴上以下内容或者直接下载该文件: http_openwebmail.conf

### Begin – Added for openwebmail ###

ScriptAlias /webmail “/var/www/cgi-bin/openwebmail/openwebmail.pl”
ScriptAlias /openwebmail “/var/www/cgi-bin/openwebmail/”
Alias /data “/var/www/data”

<Directory /var/www/cgi-bin/openwebmail>
AllowOverride None
Options +ExecCGI
Order allow,deny
Allow from all
AddHandler cgi-script .cgi .pl
</Directory>

<Directory “/var/www/data/openwebmail”>
ExpiresActive On
ExpiresByType image/gif A86400
ExpiresByType image/png A86400
ExpiresByType image/jpg A86400
ExpiresByType application/x-javascript A86400
</Directory>

### End ###

7) 修改两个openwebmail.conf文件的参数

vi /var/www/cgi-bin/openwebmail/etc/openwebmail.conf
再者就是
vi /var/www/cgi-bin/openwebmail/etc/default/openwebmail.conf
两个文件里的对应参数都必须按以下修改

auth_module auth_pam_cobalt.pl

ow_cgidir /var/www/cgi-bin/openwebmail
ow_cgiurl /openwebmail
ow_htmldir /var/www/data/openwebmail

ow_htmlurl /data/openwebmail

这里的 auth_pam_cobalt.pl 里 Sun Cobalt 公司专用的验证程序
程序代码来自： http://cobaltfaqs.com/index.php?title=Auth_pam_cobalt.pl&redirect=no

以上内容请在 /var/www/cgi-bin/openwebmail/auth 目录下创建

#*************************** auth_pam_cobalt.pl ********************************

package ow::auth_pam_cobalt;
use strict;
#
# auth_pam.pl - authenticate user with PAM
#
# 2002/08/01 webmaster.AT.pkgmaster.com
#            add check for nologin, validshell, cobaltuser
#            based on work from Trevor.Paquette.AT.TeraGo.ca
# 2001/10/05 tung.AT.turtle.ee.ncku.edu.tw
#
# The code of check_userpassword and change_userpassword is from
# the example code of Authen::PAM by Nikolay Pelov <nikip.AT.iname.com>
# Webpage is available at http://www.cs.kuleuven.ac.be/~pelov/pam
#

########## No configuration required from here ###################

use Authen::PAM;
use Fcntl qw(:DEFAULT :flock);
require "modules/filelock.pl";
require "modules/tool.pl";

my %conf;
if (($_=ow::tool::find_configfile('etc/auth_pam.conf', 'etc/defaults/auth_pam.conf')) ne '') {
   my ($ret, $err)=ow::tool::load_configfile($_, \%conf);
   die $err if ($ret<0);
}

my $servicename = $conf{'servicename'} || "login";
my $passwdfile_plaintext = $conf{'passwdfile_plaintext'} || "/etc/passwd";

my $check_nologin = $conf{'check_nologin'} || 'no';
my $check_shell = $conf{'check_shell'} || 'no';
my $check_cobaltuser = $conf{'check_cobaltuser'} || 'no';

########## end init ##############################################

# routines get_userinfo() and get_userlist still get data from a passwdfile
# instead of PAM, you may have to rewrite if it does notfit your requirement

#  0 : ok
# -2 : parameter format error
# -3 : authentication system/internal error
# -4 : user doesn't exist
sub get_userinfo {
   my ($r_config, $user)=@_;
   return(-2, 'User is null') if ($user eq '');

   my ($uid, $gid, $realname, $homedir);
   if ($passwdfile_plaintext eq "/etc/passwd") {
      ($uid, $gid, $realname, $homedir)= (getpwnam($user))[2,3,6,7];
   } else {
      if ($passwdfile_plaintext=~/\|/) { # maybe NIS, try getpwnam first
         ($uid, $gid, $realname, $homedir)= (getpwnam($user))[2,3,6,7];
      }
      if ($uid eq "") { # else, open file directly
         ($uid, $gid, $realname, $homedir)= (getpwnam_file($user, $passwdfile_plaintext))[2,3,6,7];
      }
   }
   return(-4, "User $user doesn't exist") if ($uid eq "");

   # get other gid for this user in /etc/group
   while (my @gr=getgrent()) {
      $gid.=' '.$gr[2] if ($gr[3]=~/\b$user\b/ && $gid!~/\b$gr[2]\b/);
   }
   # use first field only
   $realname=(split(/,/, $realname))[0];
   # guess real homedir under sun's automounter
   $homedir="/export$homedir" if (-d "/export$homedir");

   return(0, "", $realname, $uid, $gid, $homedir);
}


#  0 : ok
# -1 : function not supported
# -3 : authentication system/internal error
sub get_userlist {      # only used by openwebmail-tool.pl -a
   my $r_config=$_[0];

   my @userlist=();
   my $line;

   # a file should be locked only if it is local accessable
   if ( -f $passwdfile_plaintext) {
      ow::filelock::lock($passwdfile_plaintext, LOCK_SH) or
         return (-3, "Couldn't get read lock on $passwdfile_plaintext", @userlist);
   }
   open(PASSWD, $passwdfile_plaintext);
   while (defined($line=<PASSWD>)) {
      next if ($line=~/^#/);
      chomp($line);
      push(@userlist, (split(/:/, $line))[0]);
   }
   close(PASSWD);
   ow::filelock::lock($passwdfile_plaintext, LOCK_UN) if ( -f $passwdfile_plaintext);
   return(0, "", @userlist);
}

# globals passed to inner function to avoid closure effect
use vars qw($pam_user $pam_password $pam_newpassword $pam_convstate);

#  0 : ok
# -2 : parameter format error
# -3 : authentication system/internal error
# -4 : password incorrect
sub check_userpassword {
   my $r_config;
   local ($pam_user, $pam_password);    # localized global to make reentry safe
   ($r_config, $pam_user, $pam_password)=@_;
   return (-2, "User or password is null") if ($pam_user eq '' || $pam_password eq '');

   sub checkpwd_conv_func {
      my @res;
      while ( @_ ) {
         my $code = shift;
         my $msg = shift;
         my $ans = "";

         if ($code == PAM_PROMPT_ECHO_ON() ) {
            $ans = $pam_user;
         } elsif ($code == PAM_PROMPT_ECHO_OFF() ) {
            $ans = $pam_password;
         }
         push @res, (PAM_SUCCESS(),$ans);
#ow::tool::log_time("code:$code, msg:$msg, ans:$ans\n");        # debug
      }
      push @res, PAM_SUCCESS();
      return @res;
   }

   # disable SIG CHLD since authsys in PAM may fork process
   local $SIG{CHLD}; undef $SIG{CHLD};

   my ($pamh, $ret, $errmsg);
   if ( ref($pamh = new Authen::PAM($servicename, $pam_user, \&checkpwd_conv_func)) ) {
      my $tty_name = "";
      my $error=$pamh->pam_set_item(PAM_TTY(), $tty_name);
      $error=$pamh->pam_authenticate();
      if ($error==0) {
         ($ret, $errmsg)= (0, "");
      } else {
         ($ret, $errmsg)= (-4, "pam_authticate() err $error, ".pam_strerror($pamh, $error));
      }
   } else {
      ($ret, $errmsg)= (-3, "PAM init error $pamh");
   }
   $pamh = 0;  # force Destructor (per docs) (invokes pam_close())

   return($ret, $errmsg) if ($ret<0);

   # emulate pam_nologin.so
   if ($check_nologin=~/yes/i && -e "/etc/nologin") {
      return (-4, "/etc/nologin found, all logins are suspended");
   }
   # emulate pam_shells.so
   if ($check_shell=~/yes/i && !has_valid_shell($pam_user)) {
      return (-4, "user $pam_user doesn't have valid shell");
   }
   # valid user on cobalt ?
   if ($check_cobaltuser=~/yes/i) {
      my $cbhttphost=$ENV{'HTTP_HOST'}; $cbhttphost=~s/:\d+$//; # remove port number
      my $cbhomedir="/home/sites/$cbhttphost/users/$pam_user";
      if (!-d $cbhomedir) {
         return (-4, "This cobalt user $pam_user doesn't has homedir $cbhomedir");
      }
   }

   return (0, "");
}


#  0 : ok
# -1 : function not supported
# -2 : parameter format error
# -3 : authentication system/internal error
# -4 : password incorrect
sub change_userpassword {
   local ($pam_user, $pam_password, $pam_newpassword); # localized global to make reentry safe
   my $r_config;
   ($r_config, $pam_user, $pam_password, $pam_newpassword)=@_;
   return (-2, "User or password is null") if ($pam_user eq '' || $pam_password eq '' || $pam_newpassword eq '');

   local $pam_convstate=0;      # localized global to make reentry safe
   sub changepwd_conv_func {
      my @res;

      while ( @_ ) {
         my $code = shift;
         my $msg = shift;
         my $ans = "";

         if ($code == PAM_PROMPT_ECHO_ON() ) {
            $ans = $pam_user;
         } elsif ($code == PAM_PROMPT_ECHO_OFF() ) {
            if ($pam_convstate>1 || $msg =~ /new/i ) {
               $ans = $pam_newpassword;
            } else {
               $ans = $pam_password;
            }
            $pam_convstate++;
         }
         push @res, (PAM_SUCCESS(),$ans);
#ow::tool::log_time("code:$code, msg:$msg, ans:$ans\n");        # debug
      }
      push @res, PAM_SUCCESS();
      return @res;
   }

   # disable SIG CHLD since authsys in PAM may fork process
   local $SIG{CHLD}; undef $SIG{CHLD};

   my ($pamh, $ret, $errmsg);
   if (ref($pamh = new Authen::PAM($servicename, $pam_user, \&changepwd_conv_func)) ) {
      my $error=$pamh->pam_chauthtok();
      if ( $error==0 ) {
         ($ret, $errmsg)= (0, "");
      } else {
         ($ret, $errmsg)= (-4, "pam_authtok() err $error, ".pam_strerror($pamh, $error));
      }
   } else {
      ($ret, $errmsg)= (-3, "PAM init error $pamh");
   }
   $pamh = 0;  # force Destructor (per docs) (invokes pam_close())
   return($ret, $errmsg);
}


########## misc support routine ##################################

# this routine is slower than system getpwnam() but can work with file
# other than /etc/passwd. ps: it always return '*' for passwd field.
sub getpwnam_file {
   my ($user, $passwdfile_plaintext)=@_;
   my ($name, $passwd, $uid, $gid, $gcos, $dir, $shell);

   return("", "", "", "", "", "", "", "", "") if ($user eq "");

   open(PASSWD, "$passwdfile_plaintext");
   while(<PASSWD>) {
      next if (/^#/);
      chomp;
      ($name, $passwd, $uid, $gid, $gcos, $dir, $shell)=split(/:/);
      last if ($name eq $user);
   }
   close(PASSWD);

   if ($name eq $user) {
      return($name, "*", $uid, $gid, 0, "", $gcos, $dir, $shell);
   } else {
      return("", "", "", "", "", "", "", "", "");
   }
}

sub has_valid_shell {
   my $user=$_[0];

   my ($name, $shell);
   if ($passwdfile_plaintext eq "/etc/passwd") {
      $shell = (getpwnam($user))[8];
   } else {
      if ($passwdfile_plaintext=~/\|/) { # maybe NIS, try getpwnam first
         ($name, $shell)= (getpwnam($user))[0,8];
      }
      if ($name eq "") { # else, open file directly
         ($name, $shell) = (getpwnam_file($user, $passwdfile_plaintext))[0,8];
      }
   }
   return 0 if ($shell eq '');

   my $validshell = 0;
   if (open(ES, "/etc/shells")) {
      while(<ES>) {
         chomp;
         if( $shell eq $_ ) {
            $validshell = 1; last;
         }
      }
      close(ES);
   }
   return 0 if (!$validshell);

   return 1;
}

1;

#*************************** auth_pam_cobalt.pl ********************************

Here is a complete example file that is from my system that reflects not only the above changes but other changes I make from the default to support our current user preferences.
openwebmail.conf
- Note if you enable spell check like my above example configuration make sure you install the aspell library
- yum install aspell
You should open /var/www/cgi-bin/openwebmail/etc/openwebmail.conf.help if you want to understand all the possible settings that can be made
以上是openwebmail.conf的配置说明，大家可以从网上找到很多关于openwebmail默认配置实例，这里就不再重申了！

8) 修改 db.conf

nano -w /var/www/cgi-bin/openwebmail/etc/defaults/dbm.conf
修改为以下内容
dbm_ext                       .db
dbmopen_ext               .db
dbmopen_haslock      no

9) 重启 httpd 服务

/etc/init.d/httpd restart

10) 执行以下命令

/var/www/cgi-bin/openwebmail/openwebmail-tool.pl –init

11) 完成全部安装及配置过程

http://server_ip_address/webmail

多域名時用戶跟隨域名：
openwebmail.conf 裡增加參數，寄件人地址會跟隨訪問OPENWEBMAIL使用的域名

domainoverride yes
——————-

增加用户邮箱 quota 功能

# vi /var/www/cgi-bin/openwebmail/etc/openwebmail.conf

在文件最后加入以下代码，即限制用户邮箱空间为60M
############################################
# Quota System (limit in KB and threshold in %)
1 MB =     1,024 KB
10 MB =    10,240 KB
100 MB =   102,400 KB
1 GB = 1,024 MB = 1,048,576 KB
# uncomment following lines if you wish to enable Quota System for 10 Mb

quota_module            quota_du.pl    <– 如果使用 quota_unixfs.pl 將會跟隨系統對每個用戶的限額
spool_limit             61440
quota_limit             61440
quota_threshold         0
delmail_ifquotahit      yes
delfile_ifquotahit      yes

如果使用CentOS 平台 openwebmail 使用 auth_unix.pl 的验证模式，需要修改openwebmail.conf

# vi /var/www/cgi-bin/openwebmail/etc/defaults/auth_unix.conf

a. set passwdfile_encrypted to ‘/etc/shadow’

b. set passwdmkdb to ‘none’

不然用户使用openwebmail无法登录

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