如果谷歌或微软能够更有效地提供和维护邮件服务器，每一个公司和大学还有必要自己这样做吗？
Why should every company or university set up and maintain its own mail server, when Google or Microsoft can do it more efficiently?
如果谷歌或微软能够更有效地提供和维护邮件服务器，每一个公司和大学还有必要自己这样做吗？
Why should every company or university set up and maintain its own mail server, when Google or Microsoft can do it more efficiently?
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