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annotate xml/en/docs/mail/ngx_mail_smtp_module.xml @ 3088:7b7dbaa7d777

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Documented XOAUTH2 and OAUTHBEARER authentication methods.
author Maxim Dounin <mdounin@mdounin.ru>
date Tue, 04 Jun 2024 18:35:21 +0300
parents 4add6ae1296f
children
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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="Module ngx_mail_smtp_module"
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11 link="/en/docs/mail/ngx_mail_smtp_module.html"
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12 lang="en"
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13 rev="9">
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14
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15 <section id="directives" name="Directives">
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16
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17 <directive name="smtp_auth">
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18 <syntax><value>method</value> ...</syntax>
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19 <default>plain login</default>
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20 <context>mail</context>
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21 <context>server</context>
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22
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23 <para>
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24 Sets permitted methods of
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25 <link url="https://datatracker.ietf.org/doc/html/rfc2554">SASL authentication</link>
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26 for SMTP clients.
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27 Supported methods are:
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28 <list type="tag">
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29
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30 <tag-name><literal>plain</literal></tag-name>
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31 <tag-desc>
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32 <link url="https://datatracker.ietf.org/doc/html/rfc4616">AUTH PLAIN</link>
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33 </tag-desc>
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34
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35 <tag-name><literal>login</literal></tag-name>
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36 <tag-desc>
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37 <link url="https://datatracker.ietf.org/doc/html/draft-murchison-sasl-login-00">AUTH LOGIN</link>
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38 </tag-desc>
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39
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40 <tag-name><literal>cram-md5</literal></tag-name>
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41 <tag-desc>
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42 <link url="https://datatracker.ietf.org/doc/html/rfc2195">AUTH CRAM-MD5</link>.
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43 In order for this method to work, the password must be stored unencrypted.
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44 </tag-desc>
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45
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46 <tag-name><literal>external</literal></tag-name>
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47 <tag-desc>
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48 <link url="https://datatracker.ietf.org/doc/html/rfc4422">AUTH EXTERNAL</link> (1.11.6).
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49 </tag-desc>
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50
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51 <tag-name><literal>xoauth2</literal></tag-name>
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52 <tag-desc>
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53 <link url="https://developers.google.com/gmail/imap/xoauth2-protocol"
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54 >AUTH XOAUTH2</link> (1.27.1).
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55 </tag-desc>
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56
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57 <tag-name><literal>oauthbearer</literal></tag-name>
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58 <tag-desc>
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59 <link url="https://datatracker.ietf.org/doc/html/rfc7628"
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60 >AUTH OAUTHBEARER</link> (1.27.1).
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61 </tag-desc>
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62
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63 <tag-name><literal>none</literal></tag-name>
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64 <tag-desc>
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65 Authentication is not required.
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66 </tag-desc>
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67
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68 </list>
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69 </para>
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70
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71 <para>
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72 Plain text authentication methods
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73 (<literal>AUTH PLAIN</literal> and <literal>AUTH LOGIN</literal>)
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74 are always enabled,
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75 though if the <literal>plain</literal> and <literal>login</literal> methods
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76 are not specified,
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77 <literal>AUTH PLAIN</literal> and <literal>AUTH LOGIN</literal>
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78 will not be automatically included in <link id="smtp_capabilities"/>.
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79 </para>
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80
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81 </directive>
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82
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83
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84 <directive name="smtp_capabilities">
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85 <syntax><value>extension</value> ...</syntax>
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86 <default/>
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87 <context>mail</context>
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88 <context>server</context>
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89
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90 <para>
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91 Sets the SMTP protocol extensions list
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92 that is passed to the client in response to the
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93 <literal>EHLO</literal> command.
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94 The authentication methods specified in the <link id="smtp_auth"/> directive and
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95 <link url="https://datatracker.ietf.org/doc/html/rfc3207">STARTTLS</link>
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96 are automatically added to this list depending on the
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97 <link doc="ngx_mail_ssl_module.xml" id="starttls"/> directive value.
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98 </para>
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99
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100 <para>
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101 It makes sense to specify the extensions
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102 supported by the MTA
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103 to which the clients are proxied (if these extensions are related to commands
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104 used after the authentication, when nginx transparently proxies the client
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105 connection to the backend).
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106 </para>
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107
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108 <para>
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109 The current list of standardized extensions is published at
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110 <link url="http://www.iana.org/assignments/mail-parameters">www.iana.org</link>.
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111 </para>
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112
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113 </directive>
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114
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115
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116 <directive name="smtp_client_buffer">
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117 <syntax><value>size</value></syntax>
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118 <default>4k|8k</default>
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119 <context>mail</context>
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120 <context>server</context>
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121
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122 <para>
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123 Sets the <value>size</value> of the buffer used for reading SMTP commands.
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124 By default, the buffer size is equal to one memory page.
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125 This is either 4K or 8K, depending on a platform.
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126 </para>
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127
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128 </directive>
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129
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130
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131 <directive name="smtp_greeting_delay">
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132 <syntax><value>time</value></syntax>
3d2c4bb34e82 Documented smtp_client_buffer and smtp_greeting_delay directives.
Yaroslav Zhuravlev <yar@nginx.com>
parents: 1924
diff changeset
133 <default>0</default>
3d2c4bb34e82 Documented smtp_client_buffer and smtp_greeting_delay directives.
Yaroslav Zhuravlev <yar@nginx.com>
parents: 1924
diff changeset
134 <context>mail</context>
3d2c4bb34e82 Documented smtp_client_buffer and smtp_greeting_delay directives.
Yaroslav Zhuravlev <yar@nginx.com>
parents: 1924
diff changeset
135 <context>server</context>
3d2c4bb34e82 Documented smtp_client_buffer and smtp_greeting_delay directives.
Yaroslav Zhuravlev <yar@nginx.com>
parents: 1924
diff changeset
136
3d2c4bb34e82 Documented smtp_client_buffer and smtp_greeting_delay directives.
Yaroslav Zhuravlev <yar@nginx.com>
parents: 1924
diff changeset
137 <para>
3d2c4bb34e82 Documented smtp_client_buffer and smtp_greeting_delay directives.
Yaroslav Zhuravlev <yar@nginx.com>
parents: 1924
diff changeset
138 Allows setting a delay before sending an SMTP greeting
3d2c4bb34e82 Documented smtp_client_buffer and smtp_greeting_delay directives.
Yaroslav Zhuravlev <yar@nginx.com>
parents: 1924
diff changeset
139 in order to reject clients who fail to wait for the greeting before
3d2c4bb34e82 Documented smtp_client_buffer and smtp_greeting_delay directives.
Yaroslav Zhuravlev <yar@nginx.com>
parents: 1924
diff changeset
140 sending SMTP commands.
3d2c4bb34e82 Documented smtp_client_buffer and smtp_greeting_delay directives.
Yaroslav Zhuravlev <yar@nginx.com>
parents: 1924
diff changeset
141 </para>
3d2c4bb34e82 Documented smtp_client_buffer and smtp_greeting_delay directives.
Yaroslav Zhuravlev <yar@nginx.com>
parents: 1924
diff changeset
142
3d2c4bb34e82 Documented smtp_client_buffer and smtp_greeting_delay directives.
Yaroslav Zhuravlev <yar@nginx.com>
parents: 1924
diff changeset
143 </directive>
3d2c4bb34e82 Documented smtp_client_buffer and smtp_greeting_delay directives.
Yaroslav Zhuravlev <yar@nginx.com>
parents: 1924
diff changeset
144
664
8283b1048b27 Translated mail modules into English.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
145 </section>
8283b1048b27 Translated mail modules into English.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
146
8283b1048b27 Translated mail modules into English.
Vladimir Homutov <vl@nginx.com>
parents:
diff changeset
147 </module>