谁遇过邮件乱码？在线等候

我收到几个邮件，出现乱码，里面有附件，是图片，乱码是这种形式的：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 我收到几个邮件，出现乱码，里面有附件，是图片，乱码是这种形式的：RjrzTnuIHgCjcgI