The POP3 mail server (%S) does not support UIDL or XTND XLST, which are required to implement the ``Leave on Server'', ``Maximum Message Size'' or ``Fetch Headers Only'' options. To download your mail, turn off these options in the Server Settings for your mail server in the Account Settings window.
POP3 邮件服务器 （%S）不支持 UIDL 或 XTND XLST，而这是实现“在服务器保留”、“最大消息长度”或“仅下载消息头”选项必须的。要下载您的邮件，请在账户设置的服务器设置中关闭这些选项。