收件服务器什么意思啊?收件服务器怎么设置才能不丢邮件?如何设置收件服务器确保邮件不丢失
What does "receiving server" mean? How should the recipient server be set up to avoid losing emails? How to set up a recipient server to ensure that emails are not lost
以上为机器翻译结果，长、整句建议使用 人工翻译 。
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