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annotate xml/ru/docs/mail/ngx_mail_proxy_module.xml @ 966:95c3c3bbf1ce

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author Egor Nikitin <yegor.nikitin@gmail.com>
date Wed, 14 Aug 2013 12:03:41 +0400
parents ca72f350f6f0
children 73b31b44d3a0
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1 <?xml version="1.0"?>
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2
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3 <!--
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4 Copyright (C) 2006, 2007 Anton Yuzhaninov
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5 Copyright (C) Nginx, Inc.
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6 -->
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7
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8 <!DOCTYPE module SYSTEM "../../../../dtd/module.dtd">
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9
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10 <module name="Модуль ngx_mail_proxy_module"
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11 link="/ru/docs/mail/ngx_mail_proxy_module.html"
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12 lang="ru"
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13 rev="1">
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14
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15 <section id="directives" name="Директивы">
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16
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17 <!--
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18 <directive name="proxy">
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19 <syntax><literal>on</literal> | <literal>off</literal></syntax>
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20 <default>off</default>
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21 <context>mail</context>
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22 <context>server</context>
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23
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24 <para>
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25 В текущей версии нигде не проверяется.
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26 </para>
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27
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28 </directive>
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29 -->
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30
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31
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32 <directive name="proxy_buffer">
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33 <syntax><value>размер</value></syntax>
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34 <default>4k|8k</default>
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35 <context>mail</context>
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36 <context>server</context>
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37
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38 <para>
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39 Задаёт размер буфера, используемого при проксировании.
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40 По умолчанию размер одного буфера равен размеру страницы.
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41 В зависимости от платформы это или 4K, или 8K.
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42 </para>
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43
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44 </directive>
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45
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46
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47 <directive name="proxy_pass_error_message">
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48 <syntax><literal>on</literal> | <literal>off</literal></syntax>
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49 <default>off</default>
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50 <context>mail</context>
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51 <context>server</context>
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52
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53 <para>
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54 Определяет, передавать ли клиенту сообщение об ошибке,
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55 полученное при аутентификации на бэкенде.
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56 </para>
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57
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58 <para>
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59 Обычно, если аутентификация в nginx прошла успешно,
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60 бэкенд не может вернуть ошибку.
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61 Если же он всё-таки возвращает ошибку,
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62 это значит, что произошла ошибка внутри системы.
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63 В таких случаях сообщение бэкенда может содержать информацию,
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64 которую нельзя показывать клиенту.
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65 Однако для некоторых POP3-серверов ошибка в ответ на правильный пароль
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66 является штатным поведением.
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67 Например, CommuniGatePro извещает пользователя о
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68 <link url="http://www.stalker.com/CommuniGatePro/Alerts.html#Quota">переполнении
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69 ящика</link> или других событиях, периодически выдавая
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70 <link url="http://www.stalker.com/CommuniGatePro/POP.html#Alerts">ошибку
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71 аутентификации</link>.
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72 В этом случае директиву стоит включить.
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73 </para>
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74
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75 </directive>
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78 <directive name="proxy_timeout">
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79 <syntax><value>время</value></syntax>
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80 <default>24h</default>
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81 <context>mail</context>
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82 <context>server</context>
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83
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84 <para>
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85 Задаёт таймаут, который используется после начала проксирования на бэкенд.
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86 </para>
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87
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88 </directive>
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89
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90
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91 <directive name="xclient">
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92 <syntax><literal>on</literal> | <literal>off</literal></syntax>
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93 <default>on</default>
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94 <context>mail</context>
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95 <context>server</context>
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96
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97 <para>
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98 Разрешает или запрещает передачу команды <literal>XCLIENT</literal>
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99 при подключении к SMTP-бэкенду.
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100 Для работы команды <literal>XCLIENT</literal> необходим Postfix с
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101 <link url="http://citrin.ru/nginx:xclient-login-patch">патчем</link>,
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102 который добавляет параметр <literal>LOGIN</literal>.
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103 Если не использовать <literal>XCLIENT</literal>, то MTA не сможет писать в лог
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104 <literal>IP</literal>/<literal>HELO</literal>/<literal>LOGIN</literal>
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105 клиента и применять различные ограничения на основе этих данных.
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106 </para>
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107
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108 <para>
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109 Если <literal>xclient</literal> включено,
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110 то при подключении к бэкенду nginx сначала передаёт
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111 <example>
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112 EHLO server_name
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113 </example>
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114 потом
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115 <example>
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116 XCLIENT PROTO=ESMTP HELO=client_hello ADDR=192.168.1.1 LOGIN=good_user NAME=[UNAVAILABLE]
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117 </example>
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118 Если клиент при подключении к nginx передал <literal>EHLO</literal>, то в
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119 команде <literal>XCLIENT</literal> передаётся <literal>PROTO=ESMTP</literal>.
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120 В противном случае передаётся <literal>PROTO=SMTP</literal>.
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121 В параметре <literal>ADDR</literal> указывается IP-адрес клиента,
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122 а поскольку nginx не обращается к DNS для получения имени хоста,
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123 то указывается <literal>NAME=[UNAVAILABLE]</literal>.
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124 </para>
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125
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126 <para>
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127 Если же <literal>xclient</literal> выключено,
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128 то при подключении к бэкенду nginx передаёт
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129 <literal>EHLO</literal>, если его передал клиент,
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130 и <literal>HELO</literal> в остальных случаях.
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131 </para>
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132
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133 </directive>
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134
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135 </section>
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136
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137 </module>