Mac OS X Mail：winmail.dat 附件是什麼？
摘要
您可能想知道 winmail.dat 附件是什麼，即 Mail 所顯示的附件，具有一個「文字上有問號」圖像。
受影響的產品
Mail, Microsoft Outlook、Microsoft Exchange Client
這類附件代表電子郵件是從 Microsoft 電子郵件應用程式（如 Outlook 和 Microsoft Exchange Client）所傳送，並且包含豐富文字資訊 -- 字體、色彩和特殊屬性（如底線和粗體）應該如何顯示在電子郵件中（附件不會顯示在 Outlook 中，但會顯示在 Mail 中；它可能會出現在其他電子郵件應用程式，如名稱為「application/ms-tnef」的 MIME 區段）。
避免這些附件
若未來不希望看到這些附件，您可以要求寄件人在傳送郵件之前，在郵件用戶端中不要勾選電子郵件的 [Send to this recipient in Microsoft rich text format]（[使用 Microsoft Rich Text (RTF) 格式傳送給此收件人]）註記框或偏好設定。
其他資訊
如需更多資訊，請參閱此 Microsoft 支援文件。
Important: Mention of third-party websites and products is for informational purposes only and constitutes neither an endorsement nor a recommendation. Apple assumes no responsibility with regard to the selection, performance or use of information or products found at third-party websites. Apple provides this only as a convenience to our users. Apple has not tested the information found on these sites and makes no representations regarding its accuracy or reliability. There are risks inherent in the use of any information or products found on the Internet, and Apple assumes no responsibility in this regard. Please understand that a third-party site is independent from Apple and that Apple has no control over the content on that website. Please contact the vendor for additional information.