alias_database = $alias_map
alias_maps = hash:/etc/postfix/aliases
broken_sasl_auth_clients = yes
command_directory = /usr/sbin
config_directory = /etc/postfix
daemon_directory = /usr/lib/postfix
debug_peer_level = 2
html_directory = no
inet_interfaces = all
mail_owner = postfix
mailq_path = /usr/bin/mailq
manpage_directory = /usr/man
mydestination = $myhostname, localhost.$mydomain, localhost, $mydomain, mail.$mydomain, www.$mydomain, ftp.$mydomain　　# 服务范围
mydomain = maxint.org　　# 域名配置
myhostname = mail.maxint.org　　# 主机名
myorigin = $mydomain　　# 后面的部分，与域名同比较好，当然与主机名同也行
newaliases_path = /usr/bin/newaliases
queue_directory = /var/spool/postfix
readme_directory = no
relay_domains = $mydestination　　# 邮件转发范围
sample_directory = /etc/postfix/sample
sendmail_path = /usr/sbin/sendmail
setgid_group = postdrop
smtpd_banner = $myhostname ESMTP $mail_name ($mail_version)　　# 命令行登录时的提示信息
smtpd_client_restrictions = permit_sasl_authenticated　　
# 禁止未经过认证的客户端向postfix发起SMTP连接
smtpd_recipient_restrictions = permit_mynetworks, permit_sasl_authenticated, reject_unauth_destination
# 对客户端发来的邮件进行过滤
smtpd_sasl_auth_enable = yes
# 启用sasl认证，对阻止广告和垃圾信息有一定作用，现在对作用实现原理还不清楚
smtpd_sasl_local_domain = ''
smtpd_sasl_security_options = noanonymous
# 禁止匿名登录方式
unknown_local_recipient_reject_code = 550

service imap2
{
  socket_type  = stream
  wait  = no
  user  = root
  server  = /usr/sbin/imapd
  log_on_success += HOST DURATION
  log_on_failure += HOST
  disable  =no本来是yes }

[root@arch1 ~]# telnet localhost 25 Trying 127.0.0.1...
Connected to localhost.localdomain.
Escape character is '^]'.
220 mail.maxint.org ESMTP Postfix (2.4.6)
mail from:maxint@maxint.org
250 2.1.0 Ok
rcpt to:maxint@zju.edu.cn
250 2.1.5 Ok
data
354 End data with<CR><LF>.<CR><LF>mail from maxint.org
.
250 2.0.0 Ok: queued as 30950FBEC
quit
221 2.0.0 Bye
Connection closed by foreign host.
[root@arch1 ~]# tail /var/log/mail.log May 2 17:41:29 arch1 postfix/smtpd[3188]: connect from localhost.localdomain[127.0.0.1]
May 2 17:41:35 arch1 postfix/smtpd[3188]: disconnect from localhost.localdomain[127.0.0.1]
May 2 17:42:06 arch1 postfix/smtpd[3188]: warning: SASL authentication failure: OTP: auxprop backend can't store properties
May 2 17:42:06 arch1 postfix/smtpd[3188]: connect from localhost.localdomain[127.0.0.1]
May 2 17:42:43 arch1 postfix/smtpd[3188]: 30950FBEC: client=localhost.localdomain[127.0.0.1]
May 2 17:43:00 arch1 postfix/cleanup[3194]: 30950FBEC: message-id=<20080502174243.30950FBEC@mail.maxint.org>May 2 17:43:00 arch1 postfix/qmgr[3136]: 30950FBEC: from=<maxint@maxint.org>, size=373, nrcpt=1 (queue active)
May 2 17:43:01 arch1 postfix/smtp[3195]: 30950FBEC: to=<maxint@zju.edu.cn>, relay=zjuem.zju.edu.cn[10.10.8.55]:25, delay=43, delays=41/0.02/0.28/0.81, dsn=2.0.0, status=sent (250 OK:has queued)
May 2 17:43:01 arch1 postfix/qmgr[3136]: 30950FBEC: removed
May 2 17:43:06 arch1 postfix/smtpd[3188]: disconnect from localhost.localdomain[127.0.0.1]

User nobody
Group nobody

Arch1：IP为192.168.0.98，是DNS服务器，也是DHCP服务器。
Arch2：eth0设为dhcp。

# Example config file /etc/vsftpd.conf
#
# Use this to use vsftpd in standalone mode, otherwise it runs through (x)inetd
listen=YESarch中默认配置文件，只要开启这个选项就能打开FTP服务 #
# The default compiled in settings are fairly paranoid. This sample file
# loosens things up a bit, to make the ftp daemon more usable.
# Please see vsftpd.conf.5 for all compiled in defaults.
#
# READ THIS: This example file is NOT an exhaustive list of vsftpd options.
# Please read the vsftpd.conf.5 manual page to get a full idea of vsftpd's
# capabilities.
#
# Allow anonymous FTP? (Beware - allowed by default if you comment this out).
anonymous_enable=NO
#
# Uncomment this to allow local users to log in.
local_enable=YES
#
# Uncomment this to enable any form of FTP write command.
write_enable=YES
#
# Default umask for local users is 077. You may wish to change this to 022,
# if your users expect that (022 is used by most other ftpd's)
local_umask=022
#anon_umask=022
#
# Uncomment this to allow the anonymous FTP user to upload files. This only
# has an effect if the above global write enable is activated. Also, you will
# obviously need to create a directory writable by the FTP user.
#anon_upload_enable=YES
#
# Uncomment this if you want the anonymous FTP user to be able to create
# new directories.
#anon_mkdir_write_enable=YES
#
# Activate directory messages - messages given to remote users when they
# go into a certain directory.
dirmessage_enable=YES
#
# Activate logging of uploads/downloads.
xferlog_enable=YES
#
# Make sure PORT transfer connections originate from port 20 (ftp-data).
connect_from_port_20=YES
#
# If you want, you can arrange for uploaded anonymous files to be owned by
# a different user. Note! Using"root"for uploaded files is not
# recommended!
#chown_uploads=YES
#chown_username=whoever
#
# You may override where the log file goes if you like. The default is shown
# below.
#xferlog_file=/var/log/vsftpd.log
#
# If you want, you can have your log file in standard ftpd xferlog format
#xferlog_std_format=YES
#
# You may change the default value for timing out an idle session.
#idle_session_timeout=600
#
# You may change the default value for timing out a data connection.
#data_connection_timeout=120
#
# It is recommended that you define on your system a unique user which the
# ftp server can use as a totally isolated and unprivileged user.
#nopriv_user=ftpsecure
#
# Enable this and the server will recognise asynchronous ABOR requests. Not
# recommended for security (the code is non-trivial). Not enabling it,
# however, may confuse older FTP clients.
#async_abor_enable=YES
#
# By default the server will pretend to allow ASCII mode but in fact ignore
# the request. Turn on the below options to have the server actually do ASCII
# mangling on files when in ASCII mode.
# Beware that on some FTP servers, ASCII support allows a denial of service
# attack (DoS) via the command"SIZE /big/file"in ASCII mode. vsftpd
# predicted this attack and has always been safe, reporting the size of the
# raw file.
# ASCII mangling is a horrible feature of the protocol.
#ascii_upload_enable=YES
#ascii_download_enable=YES
#
# You may fully customise the login banner string:
ftpd_banner=Welcome to blah FTP service.
#
# You may specify a file of disallowed anonymous e-mail addresses. Apparently
# useful for combatting certain DoS attacks.
#deny_email_enable=YES
# (default follows)
#banned_email_file=/etc/vsftpd.banned_emails
#
# You may specify an explicit list of local users to chroot() to their home
# directory. If chroot_local_user is YES, then this list becomes a list of
# users to NOT chroot().
#chroot_local_user=YES默认对本地用户开启chroot #chroot_list_enable=YES对列表中的本地用户开启chroot # (default follows)
#chroot_list_file=/etc/vsftpd.chroot_list
#
# You may activate the"-R"option to the builtin ls. This is disabled by
# default to avoid remote users being able to cause excessive I/O on large
# sites. However, some broken FTP clients such as"ncftp"and"mirror"assume
# the presence of the"-R"option, so there is a strong case for enabling it.
#ls_recurse_enable=YES
guest_enable=YES虚拟帐户开启，配合PAM的pam_list_file.so模块使用，保护系统账号 guest_username=vuser

#%PAM-1.0
#auth            required         pam_securetty.so         #Disable remote root
#auth            required         pam_listfile.so item=user sense=allow file=/etc/ftpusers onerr=succeed
#auth            required         pam_pwdb.so shadow nullok
#auth            required         pam_shells.so
#account                 required         pam_pwdb.so
#session                 required         pam_pwdb.so
auth             required         pam_userdb.so db=/etc/vsftpd_login
account          required         pam_userdb.so db=/etc/vsftpd_login

#vi users.txt
tom
123
jack
123这是密码 

#db_load -T -t hash -f users.txt /etc/vsftpd_login.db

lo="lo 127.0.0.1"eth0="eth0 192.168.0.98 netmask 255.255.255.0 broadcast 192.168.0.255"eth1="dhcp"INTERFACES=(lo eth0 eth1)
#
# Routes to start at boot-up (in this order)
# Declare each route then list in ROUTES
#     - prefix an entry in ROUTES with a ! to disable it
#
gateway="default gw 192.168.0.2"ROUTES=(!gateway)