rfc3501_cn.htm

因特网邮件访问协议－版本4rev1简体中文版。因特网邮件访问协议

<p class=MsoNormal><span style='font-family:宋体;mso-ascii-font-family:Century;
mso-hansi-font-family:Century;mso-fareast-language:ZH-CN'>　　第６、７、９章分别描述了</span><span
lang=EN-US style='mso-fareast-font-family:宋体;mso-fareast-language:ZH-CN'>IMAP</span><span
style='font-family:宋体;mso-ascii-font-family:Century;mso-hansi-font-family:Century;
mso-fareast-language:ZH-CN'>的命令、响应和语法。三者之间的联系如此紧密，甚至于我们几乎不可能独立地理解它们。特别的，不要试图单单从命令块推论命令语法，相反的，要参考正式语法。</span><span
lang=EN-US style='mso-fareast-font-family:宋体;mso-fareast-language:ZH-CN'><o:p></o:p></span></p>

<p class=MsoNormal><span lang=EN-US style='mso-fareast-font-family:宋体;
mso-fareast-language:ZH-CN'><o:p>&nbsp;</o:p></span></p>

<p class=MsoNormal><span lang=EN-US style='mso-fareast-font-family:宋体;
mso-fareast-language:ZH-CN'>1.2</span><span style='font-family:宋体;mso-ascii-font-family:
Century;mso-hansi-font-family:Century;mso-fareast-language:ZH-CN'>　本文用到的约定语</span><span
lang=EN-US style='mso-fareast-font-family:宋体;mso-fareast-language:ZH-CN'><o:p></o:p></span></p>

<p class=MsoNormal><span style='font-family:"MS Mincho";mso-fareast-language:
ZH-CN'>　　</span><span style='font-family:宋体;mso-ascii-font-family:"MS Mincho";
mso-hansi-font-family:"MS Mincho";mso-fareast-language:ZH-CN'>约定语用来描述基本的原理或者过程。本节将列出本文档的约定语。</span><span
lang=EN-US style='font-family:"MS Mincho";mso-fareast-font-family:宋体;
mso-fareast-language:ZH-CN'><o:p></o:p></span></p>

<p class=MsoNormal><span style='font-family:宋体;mso-ascii-font-family:"MS Mincho";
mso-hansi-font-family:"MS Mincho";mso-fareast-language:ZH-CN'>　　例如，“</span><span
lang=EN-US style='font-family:"MS Mincho";mso-fareast-font-family:宋体;
mso-fareast-language:ZH-CN'>C:</span><span style='font-family:宋体;mso-ascii-font-family:
"MS Mincho";mso-hansi-font-family:"MS Mincho";mso-fareast-language:ZH-CN'>”和“</span><span
lang=EN-US style='font-family:"MS Mincho";mso-fareast-font-family:宋体;
mso-fareast-language:ZH-CN'>S:</span><span style='font-family:宋体;mso-ascii-font-family:
"MS Mincho";mso-hansi-font-family:"MS Mincho";mso-fareast-language:ZH-CN'>”分别表示由客户端和服务器发出的信息行。</span><span
lang=EN-US style='font-family:"MS Mincho";mso-fareast-font-family:宋体;
mso-fareast-language:ZH-CN'><o:p></o:p></span></p>

<p class=MsoNormal><span style='font-family:宋体;mso-ascii-font-family:"MS Mincho";
mso-hansi-font-family:"MS Mincho";mso-fareast-language:ZH-CN'>　　“</span><span
lang=EN-US style='font-family:"MS Mincho";mso-fareast-font-family:宋体;
mso-fareast-language:ZH-CN'>MUST</span><span style='font-family:宋体;mso-ascii-font-family:
"MS Mincho";mso-hansi-font-family:"MS Mincho";mso-fareast-language:ZH-CN'>”、“</span><span
lang=EN-US style='font-family:"MS Mincho";mso-fareast-font-family:宋体;
mso-fareast-language:ZH-CN'>MUST NOT</span><span style='font-family:宋体;
mso-ascii-font-family:"MS Mincho";mso-hansi-font-family:"MS Mincho";mso-fareast-language:
ZH-CN'>”、“</span><span lang=EN-US style='font-family:"MS Mincho";mso-fareast-font-family:
宋体;mso-fareast-language:ZH-CN'>REQUIRE</span><span style='font-family:宋体;
mso-ascii-font-family:"MS Mincho";mso-hansi-font-family:"MS Mincho";mso-fareast-language:
ZH-CN'>”、“</span><span lang=EN-US style='font-family:"MS Mincho";mso-fareast-font-family:
宋体;mso-fareast-language:ZH-CN'>SHALL</span><span style='font-family:宋体;
mso-ascii-font-family:"MS Mincho";mso-hansi-font-family:"MS Mincho";mso-fareast-language:
ZH-CN'>”、“</span><span lang=EN-US style='font-family:"MS Mincho";mso-fareast-font-family:
宋体;mso-fareast-language:ZH-CN'>SHALL NOT</span><span style='font-family:宋体;
mso-ascii-font-family:"MS Mincho";mso-hansi-font-family:"MS Mincho";mso-fareast-language:
ZH-CN'>”、“</span><span lang=EN-US style='font-family:"MS Mincho";mso-fareast-font-family:
宋体;mso-fareast-language:ZH-CN'>SHOULD</span><span style='font-family:宋体;
mso-ascii-font-family:"MS Mincho";mso-hansi-font-family:"MS Mincho";mso-fareast-language:
ZH-CN'>”、“</span><span lang=EN-US style='font-family:"MS Mincho";mso-fareast-font-family:
宋体;mso-fareast-language:ZH-CN'>SHOULD NOT</span><span style='font-family:宋体;
mso-ascii-font-family:"MS Mincho";mso-hansi-font-family:"MS Mincho";mso-fareast-language:
ZH-CN'>”、“</span><span lang=EN-US style='font-family:"MS Mincho";mso-fareast-font-family:
宋体;mso-fareast-language:ZH-CN'>MAY</span><span style='font-family:宋体;
mso-ascii-font-family:"MS Mincho";mso-hansi-font-family:"MS Mincho";mso-fareast-language:
ZH-CN'>”，及“</span><span lang=EN-US style='font-family:"MS Mincho";mso-fareast-font-family:
宋体;mso-fareast-language:ZH-CN'>OPTIONAL</span><span style='font-family:宋体;
mso-ascii-font-family:"MS Mincho";mso-hansi-font-family:"MS Mincho";mso-fareast-language:
ZH-CN'>”这些基本的词，在本文中解释为</span><span lang=EN-US style='font-family:"MS Mincho";
mso-fareast-font-family:宋体;mso-fareast-language:ZH-CN'>[</span><span
style='font-family:宋体;mso-ascii-font-family:"MS Mincho";mso-hansi-font-family:
"MS Mincho";mso-fareast-language:ZH-CN'>关键词</span><span lang=EN-US
style='font-family:"MS Mincho";mso-fareast-font-family:宋体;mso-fareast-language:
ZH-CN'>]</span><span style='font-family:宋体;mso-ascii-font-family:"MS Mincho";
mso-hansi-font-family:"MS Mincho";mso-fareast-language:ZH-CN'>。</span><span
lang=EN-US style='font-family:"MS Mincho";mso-fareast-font-family:宋体;
mso-fareast-language:ZH-CN'><o:p></o:p></span></p>

<p class=MsoNormal style='text-indent:21.0pt;mso-char-indent-count:2.0'><span
style='font-family:宋体;mso-ascii-font-family:"MS Mincho";mso-hansi-font-family:
"MS Mincho";mso-fareast-language:ZH-CN'>“</span><span lang=EN-US
style='font-family:"MS Mincho";mso-fareast-font-family:宋体;mso-fareast-language:
ZH-CN'>can</span><span style='font-family:宋体;mso-ascii-font-family:"MS Mincho";
mso-hansi-font-family:"MS Mincho";mso-fareast-language:ZH-CN'>”（或者“</span><span
lang=EN-US style='font-family:"MS Mincho";mso-fareast-font-family:宋体;
mso-fareast-language:ZH-CN'>may</span><span style='font-family:宋体;mso-ascii-font-family:
"MS Mincho";mso-hansi-font-family:"MS Mincho";mso-fareast-language:ZH-CN'>”）用来指出某种可能情况和条件，而不是该协议的任意一种功能。</span><span
lang=EN-US style='font-family:"MS Mincho";mso-fareast-font-family:宋体;
mso-fareast-language:ZH-CN'><o:p></o:p></span></p>

<p class=MsoNormal><span lang=EN-US style='font-family:"MS Mincho";mso-fareast-font-family:
宋体;mso-fareast-language:ZH-CN'><span
style='mso-spacerun:yes'>&nbsp;&nbsp;&nbsp; </span></span><span
style='font-family:宋体;mso-ascii-font-family:"MS Mincho";mso-hansi-font-family:
"MS Mincho";mso-fareast-language:ZH-CN'>“</span><span lang=EN-US
style='font-family:"MS Mincho";mso-fareast-font-family:宋体;mso-fareast-language:
ZH-CN'>User</span><span style='font-family:宋体;mso-ascii-font-family:"MS Mincho";
mso-hansi-font-family:"MS Mincho";mso-fareast-language:ZH-CN'>”用来表示一个自然人，而“</span><span
lang=EN-US style='font-family:"MS Mincho";mso-fareast-font-family:宋体;
mso-fareast-language:ZH-CN'>client</span><span style='font-family:宋体;
mso-ascii-font-family:"MS Mincho";mso-hansi-font-family:"MS Mincho";mso-fareast-language:
ZH-CN'>”则用来表示用户运行的软件。</span><span lang=EN-US style='font-family:"MS Mincho";
mso-fareast-font-family:宋体;mso-fareast-language:ZH-CN'><o:p></o:p></span></p>

<p class=MsoNormal><span lang=EN-US style='font-family:"MS Mincho";mso-fareast-font-family:
宋体;mso-fareast-language:ZH-CN'><span
style='mso-spacerun:yes'>&nbsp;&nbsp;&nbsp; </span></span><span
style='font-family:宋体;mso-ascii-font-family:"MS Mincho";mso-hansi-font-family:
"MS Mincho";mso-fareast-language:ZH-CN'>“</span><span lang=EN-US
style='font-family:"MS Mincho";mso-fareast-font-family:宋体;mso-fareast-language:
ZH-CN'>Connection</span><span style='font-family:宋体;mso-ascii-font-family:"MS Mincho";
mso-hansi-font-family:"MS Mincho";mso-fareast-language:ZH-CN'>”表示从网络连接初始建立直至其结束的过程中，客户端、服务器间的整个、一连串的交互。</span><span
lang=EN-US style='font-family:"MS Mincho";mso-fareast-font-family:宋体;
mso-fareast-language:ZH-CN'><o:p></o:p></span></p>

<p class=MsoNormal><span lang=EN-US style='font-family:"MS Mincho";mso-fareast-font-family:
宋体;mso-fareast-language:ZH-CN'><span
style='mso-spacerun:yes'>&nbsp;&nbsp;&nbsp; </span></span><span
style='font-family:宋体;mso-ascii-font-family:"MS Mincho";mso-hansi-font-family:
"MS Mincho";mso-fareast-language:ZH-CN'>“</span><span lang=EN-US
style='font-family:"MS Mincho";mso-fareast-font-family:宋体;mso-fareast-language:
ZH-CN'>Session</span><span style='font-family:宋体;mso-ascii-font-family:"MS Mincho";
mso-hansi-font-family:"MS Mincho";mso-fareast-language:ZH-CN'>”表示从选中一个邮箱（</span><span
lang=EN-US style='font-family:"MS Mincho";mso-fareast-font-family:宋体;
mso-fareast-language:ZH-CN'>SELECT</span><span style='font-family:宋体;
mso-ascii-font-family:"MS Mincho";mso-hansi-font-family:"MS Mincho";mso-fareast-language:
ZH-CN'>或者</span><span lang=EN-US style='font-family:"MS Mincho";mso-fareast-font-family:
宋体;mso-fareast-language:ZH-CN'>EXAMINE</span><span style='font-family:宋体;
mso-ascii-font-family:"MS Mincho";mso-hansi-font-family:"MS Mincho";mso-fareast-language:
ZH-CN'>命令）直至选中结束（</span><span lang=EN-US style='font-family:"MS Mincho";
mso-fareast-font-family:宋体;mso-fareast-language:ZH-CN'>CLOSE</span><span
style='font-family:宋体;mso-ascii-font-family:"MS Mincho";mso-hansi-font-family:
"MS Mincho";mso-fareast-language:ZH-CN'>命令，或者连接终止，另一个邮箱的</span><span
lang=EN-US style='font-family:"MS Mincho";mso-fareast-font-family:宋体;
mso-fareast-language:ZH-CN'>SELECT</span><span style='font-family:宋体;
mso-ascii-font-family:"MS Mincho";mso-hansi-font-family:"MS Mincho";mso-fareast-language:
ZH-CN'>或者</span><span lang=EN-US style='font-family:"MS Mincho";mso-fareast-font-family:
宋体;mso-fareast-language:ZH-CN'>EXAMINE</span><span style='font-family:宋体;
mso-ascii-font-family:"MS Mincho";mso-hansi-font-family:"MS Mincho";mso-fareast-language:
ZH-CN'>命令）的过程中，客户端、服务器间的一连串交互。</span><span lang=EN-US style='font-family:"MS Mincho";
mso-fareast-font-family:宋体;mso-fareast-language:ZH-CN'><o:p></o:p></span></p>

<p class=MsoNormal><span lang=EN-US style='font-family:"MS Mincho";mso-fareast-font-family:
宋体;mso-fareast-language:ZH-CN'><span
style='mso-spacerun:yes'>&nbsp;&nbsp;&nbsp; </span></span><span
style='font-family:宋体;mso-ascii-font-family:"MS Mincho";mso-hansi-font-family:
"MS Mincho";mso-fareast-language:ZH-CN'>没有特别说明时，字符串当作</span><span lang=EN-US
style='font-family:"MS Mincho";mso-fareast-font-family:宋体;mso-fareast-language:
ZH-CN'>7</span><span style='font-family:宋体;mso-ascii-font-family:"MS Mincho";
mso-hansi-font-family:"MS Mincho";mso-fareast-language:ZH-CN'>位的</span><span
lang=EN-US style='font-family:"MS Mincho";mso-fareast-font-family:宋体;
mso-fareast-language:ZH-CN'>US</span><span style='font-family:宋体;mso-ascii-font-family:
"MS Mincho";mso-hansi-font-family:"MS Mincho";mso-fareast-language:ZH-CN'>－</span><span
lang=EN-US style='font-family:"MS Mincho";mso-fareast-font-family:宋体;
mso-fareast-language:ZH-CN'>ASCII</span><span style='font-family:宋体;mso-ascii-font-family:
"MS Mincho";mso-hansi-font-family:"MS Mincho";mso-fareast-language:ZH-CN'>处理。其它的字符集用“</span><span
lang=EN-US style='font-family:"MS Mincho";mso-fareast-font-family:宋体;
mso-fareast-language:ZH-CN'>CHARSET”</span><span style='font-family:宋体;
mso-ascii-font-family:"MS Mincho";mso-hansi-font-family:"MS Mincho";mso-fareast-language:
ZH-CN'>标识，与</span><span lang=EN-US style='font-family:"MS Mincho";mso-fareast-font-family:
宋体;mso-fareast-language:ZH-CN'>[MIME</span><span style='font-family:宋体;
mso-ascii-font-family:"MS Mincho";mso-hansi-font-family:"MS Mincho";mso-fareast-language:
ZH-CN'>－</span><span lang=EN-US style='font-family:"MS Mincho";mso-fareast-font-family:
宋体;mso-fareast-language:ZH-CN'>IMT]</span><span style='font-family:宋体;
mso-ascii-font-family:"MS Mincho";mso-hansi-font-family:"MS Mincho";mso-fareast-language:
ZH-CN'>中描述的、</span><span lang=EN-US style='font-family:"MS Mincho";mso-fareast-font-family:
宋体;mso-fareast-language:ZH-CN'>[CHARSET]</span><span style='font-family:宋体;
mso-ascii-font-family:"MS Mincho";mso-hansi-font-family:"MS Mincho";mso-fareast-language:
ZH-CN'>中定义的是一样的。除了定义字符集，</span><span lang=EN-US style='font-family:"MS Mincho";
mso-fareast-font-family:宋体;mso-fareast-language:ZH-CN'>CHARSETs</span><span
style='font-family:宋体;mso-ascii-font-family:"MS Mincho";mso-hansi-font-family:
"MS Mincho";mso-fareast-language:ZH-CN'>还有其它重要的语义，更多细节参考相关文档。</span><span
lang=EN-US style='font-family:"MS Mincho";mso-fareast-font-family:宋体;
mso-fareast-language:ZH-CN'><o:p></o:p></span></p>

<p class=MsoNormal><span lang=EN-US style='font-family:"MS Mincho";mso-fareast-font-family:
宋体;mso-fareast-language:ZH-CN'><span
style='mso-spacerun:yes'>&nbsp;&nbsp;&nbsp; </span>IMAP</span><span
style='font-family:宋体;mso-ascii-font-family:"MS Mincho";mso-hansi-font-family:
"MS Mincho";mso-fareast-language:ZH-CN'>中有一些协议约定语。它们涉及到协议说明的某些方面，严格讲，这些方面不属于</span><span
lang=EN-US style='font-family:"MS Mincho";mso-fareast-font-family:宋体;
mso-fareast-language:ZH-CN'>IMAP</span><span style='font-family:宋体;mso-ascii-font-family:
"MS Mincho";mso-hansi-font-family:"MS Mincho";mso-fareast-language:ZH-CN'>协议的部分，但是它们反映了被普遍认可的实践经验。协议的实现体需要考虑这些约定语，并避免冲突，不管实现这些约定语与否。例如，“</span><span
lang=EN-US style='font-family:"MS Mincho";mso-fareast-font-family:宋体;
mso-fareast-language:ZH-CN'>&amp;</span><span style='font-family:宋体;mso-ascii-font-family:
"MS Mincho";mso-hansi-font-family:"MS Mincho";mso-fareast-language:ZH-CN'>”不应该用作等级定义符――因为这与邮箱的网络命名约定冲突，而邮箱名称中“</span><span
lang=EN-US style='font-family:"MS Mincho";mso-fareast-font-family:宋体;
mso-fareast-language:ZH-CN'>&amp;”</span><span style='font-family:宋体;
mso-ascii-font-family:"MS Mincho";mso-hansi-font-family:"MS Mincho";mso-fareast-language:
ZH-CN'>的其它使用则无碍。</span><span lang=EN-US style='font-family:"MS Mincho";
mso-fareast-font-family:宋体;mso-fareast-language:ZH-CN'><o:p></o:p></span></p>

<p class=MsoNormal><span lang=EN-US style='font-family:"MS Mincho";mso-fareast-font-family:
宋体;mso-fareast-language:ZH-CN'><o:p>&nbsp;</o:p></span></p>

<p class=MsoNormal><span lang=EN-US style='font-family:"MS Mincho";mso-fareast-font-family:
宋体;mso-fareast-language:ZH-CN'>1.3. </span><span style='font-family:宋体;
mso-ascii-font-family:"MS Mincho";mso-hansi-font-family:"MS Mincho";mso-fareast-language:
ZH-CN'>实现者需要特别注意的地方</span><span lang=EN-US style='font-family:"MS Mincho";
mso-fareast-font-family:宋体;mso-fareast-language:ZH-CN'><o:p></o:p></span></p>

<p class=MsoNormal style='text-indent:10.5pt;mso-char-indent-count:1.0'><span
lang=EN-US style='font-family:"MS Mincho";mso-fareast-font-family:宋体;
mso-fareast-language:ZH-CN'><span style='mso-spacerun:yes'>&nbsp; </span></span><span
style='font-family:宋体;mso-ascii-font-family:"MS Mincho";mso-hansi-font-family:
"MS Mincho";mso-fareast-language:ZH-CN'>强烈建议</span><span lang=EN-US
style='font-family:"MS Mincho";mso-fareast-font-family:宋体;mso-fareast-language:
ZH-CN'>IMAP</span><span style='font-family:宋体;mso-ascii-font-family:"MS Mincho";
mso-hansi-font-family:"MS Mincho";mso-fareast-language:ZH-CN'>协议的实现者阅读