如何启动 dovecot？

Question 1

本教程于 2010 年 5 月 9 日发布。
v1.2.6 2009-10-05该日期之前的最后一个 dovecot 版本
v2.0.rc1 2010-07-02该日期之后的下一个 dovecot 版本

因此本教程可能会使用 1.x 配置，而现在我们将使用 dovecot 2.x。从那时起，配置设置方式已经发生了很多变化。

现在我发现了这个http://wiki2.dovecot.org/Upgrading/2.0
除了一些其他信息外，它还提供了一种将配置从 1.2 转换为 2.0 的方法。

有关升级的更多信息http://wiki2.dovecot.org/Upgrading

但我还没有解决方案

编辑：

更好的解决方案
忘掉那个教程吧http://library.linode.com并使用这个最新的更好的教程
http://www.exratione.com/2012/05/a-mailserver-on-ubuntu-1204-postfix-dovecot-mysql/
它还向您展示了如何安装垃圾邮件过滤器、防病毒检测以及如何为您的邮件服务器增加更多安全性。此外，使用此解决方案，您将能够非常轻松地添加多个域。
我首先使用下面的解决方案，现在我切换到该解决方案，它工作正常并且完美地满足了我的要求。

问题相关解答
但是如果你必须准确地找到问题中描述的鸽舍问题的解决方案，下面是我解决问题的方法......
还要安装：

apt-get install dovecot-sieve  
apt-get install dovecot-managesieved  
apt-get install dovecot-mysql

如果你愿意，请阅读有关升级旧 1.x 配置的提示 http://wiki2.dovecot.org/Upgrading

我的dovecot.conf：

log_timestamp = "%Y-%m-%d %H:%M:%S "
mail_location = maildir:/home/vmail/%d/%n/Maildir
namespace {
  inbox = yes
  location = 
  prefix = INBOX.
  separator = .
  type = private
}
passdb {
  args = /etc/dovecot/dovecot-sql.conf.ext
  driver = sql
}
protocols = imap pop3
service auth {
  unix_listener /var/spool/postfix/private/auth {
    group = postfix
    mode = 0660
    user = postfix
  }
  unix_listener auth-master {
    mode = 0600
    user = vmail
  }
  user = root
}
ssl_cert = </etc/ssl/certs/dovecot.pem
ssl_key = </etc/ssl/private/dovecot.pem
#userdb {
#  args = uid=5000 gid=5000 home=/home/vmail/%d/%n allow_all_users=yes
#  driver = static
#}
userdb {
  args = /etc/dovecot/dovecot-sql.conf.ext
  driver = sql
}
protocol lda {
  auth_socket_path = /var/run/dovecot/auth-master
  log_path = /home/vmail/dovecot-deliver.log
  mail_plugins = sieve
  postmaster_address = [email protected]
  plugin {
    sieve_global_path = /var/vmail/globalsieverc
    # The include extension fetches the :personal scripts from this 
    # directory. When ManageSieve is used, this is also where scripts 
    # are uploaded.

    sieve_dir = ~/sieve

    # The location of the user's active script:

    sieve = ~/.dovecot.sieve

    # Directory for :global include scripts (for v1.1 include extension)

    sieve_global_dir = /var/vmail/sieve

    sieve_maxscriptsize = 128
  }
}
protocol pop3 {
  pop3_uidl_format = %08Xu%08Xv
}

我的 dovecot-db.conf.ext

driver = mysql
connect = host=127.0.0.1 dbname=mail user=mail_admin password=your_password
default_pass_scheme = CRYPT
#password_query = SELECT email as user, password FROM users WHERE email='%u';
#user_query = SELECT email as user, password, 5000 as uid, 5000 as gid, '/var/vmail/%d/%n' as home FROM view_users WHERE email='%u';
password_query = SELECT email AS user, password, 5000 AS userdb_uid, 5000 AS userdb_gid, '/var/vmail/%d/%n' AS userdb_home FROM users WHERE email = '%u';
user_query = SELECT email AS user, password, 5000 AS uid, 5000 AS gid, '/var/vmail/%d/%n' AS home FROM users WHERE email = '%u';

我的 /etc/postfix/sasl/smtpd.conf（注意 auxprop_plugin:sql、sql_engine:mysql 和 '%u@%r'）

pwcheck_method: saslauthd
mech_list: plain login pam
allow_plaintext: true
auxprop_plugin: sql
sql_engine: mysql
sql_hostnames: 127.0.0.1
sql_user: mail_admin
sql_passwd: your_password
sql_database: mail
sql_select: select password from users where email = '%u@%r'

资料来源：
我通过谷歌搜索收集了有关此问题的所有信息，但最后一个问题

2013-01-03 16:43:27 lda: Error: userdb lookup([email protected]): Disconnected unexpectedly
2013-01-03 16:43:27 lda: Fatal: Internal error occurred. Refer to server log for more information.

我解决了阅读一些http://workaround.org/ispmail/lenny/configure-dovecot
基本上，我发现当你用 Google 搜索这里出现的任何错误输出时，你都会得到很好的结果：

/home/vmail/dovecot-deliver.log
/var/log/mail.log
/var/log/mail.err
/var/log/syslog

Answer