无法设置发送选项，没有对此姓名有效的选项。

Send options could not be set. No options available for this name.

youdao

本文中没有详细描述的功能(例如，邮件标志、邮件发送选项以及文件夹操作)可能随着使用的后端的不同而改变。

Features not described in detail in this article, such as message flags, mail delivery options, and folder operations, can vary depending on the backend you use.

youdao

如果恶意客户机发送的选项覆盖窗口中几乎全部的数据，则无法对此加以阻止。

There is nothing to stop a malicious client from sending options that cover almost all of the data in the window.

youdao