任何版本的Microsoft Exchange Server是否支持RFC 5336/6531(国

一句话：虽然目前Exchange不支持,但似乎微软开始支持Office中的EAI,这意味着他们可能计划在未来支持其他产品的EAI.

这是基于Microsoft文章中有关Outlook 2016中的新功能的以下段落.在What’s new in Outlook 2016 for Windows中,Microsoft声明：

EAI (Email Address Internationalization)

EAI is a Outlook 2016 feature that enables you to send mail to,or
receive mail from any email addresses regardless of the language of
the email address. International addresses work just like English
email addresses,so you reply,send,and compose emails the same way.

If you own international email addresses,you can configure them and
use all the features of Outlook 2016. Office 365 doesn’t support
creation of international address at the time of the release of
Outlook 2016. However,if you’re an Office 365 user,you can send mail
to and receive email from any international address. We recommend that
you use Unicode Outlook data files (pst and ost files) when using EAI.

特别值得注意的是“Office 365不支持在Outlook 2016发布时创建国际地址.”

可以合理地将该声明视为暗示他们将在Office 365的未来支持此功能.

此外,您可以将Microsoft Office 365 Exchange Online的功能集视为Microsoft Exchange Server中功能的预览.因此,预计未来在Microsoft Exchange中支持EAI是合理的.

另外值得注意的是,从2014年8月5日起,Google也开始支持EAI

Starting now,Gmail (and shortly,Calendar) will recognize addresses that contain accented or non-Latin characters. This means Gmail users can send emails to,and receive emails from,people who have these characters in their email addresses. Of course,this is just a first step and there’s still a ways to go. In the future,we want to make it possible for you to use them to create Gmail accounts.