Exchange Online 中的邮件格式和传输Message format and transmission in Exchange Online

有 Outlook,在 web 上,Outlook 和 Exchange Online 中的设置该控件的电子邮件格式和如何发送到其他域的人员。在大多数情况下工作的默认设置。如果特定收件人有读取从组织发出的消息的问题,您可以调整为各个用户或特定域上的所有用户的设置。例如,可以防止收件人接收 winmail.dat 附件。There are settings in Outlook, Outlook on the web, and Exchange Online that control the format of email messages and how they are sent to people on other domains. The default settings work in most cases. If specific recipients have trouble reading messages sent from your organization, you can adjust the settings for individual users, or for all users on a specific domain. For example, you can prevent recipients from receiving a winmail.dat attachment.

您可以使用两种类型的设置:There are two types of settings you can use:

  • 邮件格式。当用户创建邮件时,可以选择创作邮件的邮件格式。在 Outlook 中,用户可以选择纯文本、HTML 和富文本格式。在 Outlook Web App 中,用户可以选择纯文本和 HTML。Message format. When a user creates a message, they can choose the message format in which to author the message. In Outlook, they have a choice between plain text, HTML, and rich-text format. In Outlook Web App they have a choice between plain text and HTML.

  • 邮件传输。这表示邮件实际上如何发送到其他电子邮件系统。Exchange 可以使用多用途 Internet 邮件扩展 (MIME) 或传输中性封装格式 (TNEF) 将邮件发送到其他域。这三种邮件格式均可使用 TNEF 发送。只有 HTML 和纯文本可以使用 MIME 发送。邮件传输格式可以由每个域的管理员或由每个收件人设置,用户还可以指定邮件传输格式。Message transmission. This means how the message is actually sent to the other email system. Exchange can send messages to other domains by using Multipurpose Internet Mail Extensions (MIME) or Transport Neutral Encapsulation Format (TNEF). All three message formats can be sent using TNEF. Only HTML and plain text can be sent using MIME. Message transmission format can be set by an admin per domain or per recipient, and users can also specify message transmission format.

邮件格式Message formats

以下列表介绍了 Exchange Online 中可用的三种邮件格式,并显示了哪些格式在 Outlook 和 Outlook Web App 中可用:The following list describes the three message formats available in Exchange Online, and shows which ones are available in Outlook and Outlook Web App:

格式Format 描述Description 在 Outlook 中可用Available in Outlook 在 web 上的 Outlook 中可用Available in Outlook on the web
纯文本Plain text
纯文本邮件仅使用 RFC 2822 中描述的 US-ASCII 文本。这种邮件不能包含其他的字体或其他文本格式。A plain text message uses only US-ASCII text as described in RFC 2822. The message can't contain different fonts or other text formatting.
Yes
Yes
HTMLHTML
HTML 邮件支持文本格式、背景图像、表、项目符号及其他图形元素。An HTML message supports text formatting, background images, tables, bullet points, and other graphical elements.
Yes
Yes
RTF 格式 (RTF)Rich text format (RTF)
RTF 支持文本格式和其他图形元素。RTF supports text formatting and other graphical elements.
仅 Outlook、Outlook Web App 和其他几个 MAPI 电子邮件客户端支持 RTF 邮件。Only Outlook, Outlook Web App, and a few other MAPI email clients understand RTF messages.
Yes
可以阅读 RTF 格式的邮件,但无法格式化或发送此格式Can read messages formatted in RTF, but can't format or send this format

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发送给外部收件人的邮件的邮件传输格式Message transmission formats for mail sent to external recipients

下表介绍了 Exchange Online 向外部收件人发送电子邮件时使用的邮件传输格式。The following table describes the message transmission formats that Exchange Online uses to send email messages to external recipients.

传输格式Transmission format 描述Description
传输中性封装格式 (TNEF)Transport Neutral Encapsulation Format (TNEF)
TNEF 是用于传输格式化电子邮件的 Microsoft 特定格式。TNEF 邮件包含纯文本形式的邮件以及打包原始格式形式的邮件的附件。通常,此附件名为 Winmail.dat。Winmail.dat 附件包括格式、附件和 Outlook 特定功能(如会议请求)。 TNEF is a Microsoft-specific format for transmitting formatted email messages. A TNEF message contains a plain text version of the message and an attachment that packages the original formatted version of the message. Typically, this attachment is named Winmail.dat. The Winmail.dat attachment includes formatting, attachments, and Outlook-specific features such as meeting requests.
完全识别 TNEF 的电子邮件客户端(例如 Outlook)可处理 Winmail.dat 附件并显示原始邮件内容,而不会显示 Winmail.dat 附件。不支持 TNEF 的电子邮件客户端可以通过下列任一方式显示 TNEF 邮件: An email client that fully understands TNEF, such as Outlook, processes the Winmail.dat attachment and displays the original message content without ever displaying the Winmail.dat attachment. An email client that doesn't understand TNEF may present a TNEF message in any of the following ways:
显示纯文本版本的邮件,并且该邮件包含名为 Winmail.dat、Win.dat 或一些其他中性名称(如 Att nnnnn.dat 或 Att nnnnn.eml,其中 nnnnn 占位符表示随机数字)的附件。The plain text version of the message is displayed, and the message contains an attachment named Winmail.dat, Win.dat, or some other generic name such as Att nnnnn.dat or Att nnnnn.eml where the nnnnn placeholder represents a random number.
显示纯文本版本的邮件。忽略或删除 TNEF 附件。结果是纯文本邮件。 The plain text version of the message is displayed. The TNEF attachment is ignored or removed. The result is a plain text message.
有一些第三方实用程序可以帮助转换 Winmail.dat 附件。There are third-party utilities that can help convert Winmail.dat attachments.
多用途 Internet 邮件扩展 (MIME)Multipurpose Internet Mail Extensions (MIME)
MIME 是一种 Internet 标准,支持采用除 ASCII 以外的字符集的文本、非文本附件、包含多个部分的邮件正文以及采用非 ASCII 字符集的头信息。MIME is an Internet standard that supports text in character sets other than ASCII, non-text attachments, message bodies with multiple parts, and header information in non-ASCII character sets.

邮件格式和传输设置Message format and transmission settings

管理员和用户可以控制邮件格式与传输。管理员设置优先于用户设置。Admins and users can control message formatting and transmission. Admin settings override user settings.

管理员可以控制下列设置:Admins can control the following settings:

  • 远程域设置 远程域设置控制发送给远程域用户的邮件的格式。您可以控制特定外部域或所有外部域的格式。有关远程域的详细信息,请参阅 Exchange Online 中的远程域。远程域设置优先于管理员或用户设置的用户设置。Remote domain settings Remote domain settings control the format of messages sent to people on the remote domain. You can control the format for a specific external domain, or for all external domains. For more information about remote domains, see Remote domains in Exchange Online. The remote domain settings override the per-user settings set by admins or users.

  • 邮件用户和邮件联系人设置您可以通过更改为特定邮件用户或邮件联系人设置更改单个收件人的设置。邮件用户和邮件联系人,都很相似,这是因为同时具有外部电子邮件地址,并且包含有关 Exchange Online 组织外部的人员的信息。主要区别是邮件用户具有可用于登录到 Exchange Online 组织的用户 Id。当管理员更改每个收件人设置时,它将覆盖该收件人设置用户的设置。有关管理设置的详细信息,请参阅管理邮件用户管理邮件联系人Mail user and mail contact settings You can change settings for individual recipients by changing settings for specific mail users or mail contacts. Mail users and mail contacts are similar because both have external email addresses and contain information about people outside the Exchange Online organization. The main difference is mail users have user IDs that can be used to sign in to the Exchange Online organization. When an admin changes a per-recipient setting, it overrides settings that a user sets for that recipient. For more information about the admin settings, see Manage mail users and Manage mail contacts.

用户可以控制下列设置:Users can control the following settings:

  • Outlook 设置 在 Outlook 中,您可以设置下表介绍的邮件格式和编码选项:Outlook settings In Outlook, you can set the message formatting and encoding options described in the following list:

    • 邮件格式 您可以为所有邮件设置默认邮件格式。撰写特定邮件时,您可以覆盖默认邮件格式。Message format You can set the default message format for all messages. You can override the default message format as you compose a specific message.

    • Internet 邮件格式 您可以控制是否将 TNEF 邮件发送到远程收件人,或者是否先将这些邮件转换为更兼容的格式。您还可以为发送到远程收件人的邮件指定各种邮件编码选项。这些设置不适用于发送到 Exchange Online 组织中的邮件。Internet message format You can control whether TNEF messages are sent to remote recipients or whether they are first converted to a more compatible format. You can also specify various message encoding options for messages sent to remote recipients. These settings don't apply to messages sent to recipients in the Exchange Online organization.

    • Internet 收件人邮件格式 您可以控制是否将 TNEF 邮件发送到特定收件人,或者是否先将这些邮件转换为更兼容的格式。您可以为"联系人"文件夹中的特定联系人设置选项,并且可以在撰写邮件时在"收件人:"、"抄送:"或"密件抄送:"字段中覆盖特定收件人的选项。这些选项不适用于 Exchange Online 组织中的收件人。Internet recipient message format You can control whether TNEF messages are sent to specific recipients or whether they are first converted to a more compatible format. You can set the options for specific contacts in your Contacts folder, and you can override these options for a specific recipient in the To, Cc, or Bcc fields as you compose a message. These options aren't available for recipients in the Exchange Online organization.

    • Internet 收件人邮件编码选项 您可以控制联系人文件夹中特定联系人的 MIME 或纯文本编码选项,并且可以在撰写邮件时在"收件人:"、"抄送:"或"密件抄送:"字段中覆盖特定收件人的选项。这些选项不适用于 Exchange Online 组织中的收件人。Internet recipient message encoding options You can control the MIME or plain text encoding options for specific contacts in your Contacts folder, and you can override these options for a specific recipient in the To, Cc, or Bcc fields as you compose a message. These options aren't available for recipients in the Exchange Online organization.

    • 国际选项 您可以控制在邮件中使用的字符集。International options You can control the character sets used in messages.

      有关 Outlook 设置的详细信息,请参阅在 Outlook 中更改邮件格式For more information about Outlook settings, see Change the message format in Outlook.

  • 在网站设置的 outlook Web 应用程序/Outlook您可以设置的邮件格式选项以下列表所述:Outlook Web App/Outlook on the web settings You can set the message formatting options described in the following list:

    • 邮件格式 您可以为所有邮件设置默认邮件格式。撰写特定邮件时,您可以覆盖默认邮件格式。Message format You can set the default message format for all messages. You can override the default message format as you compose a specific message.

      有关 Outlook Web App 设置的详细信息,请参阅在 Outlook Web App 中创建和回复邮件For more information on Outlook Web App settings, see Create and respond to messages in Outlook Web App.

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