Enterprises can hire a certain space as their own mail server.

企业可以租用一定的空间作为自己的邮件服务器。

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They must keep up their health insurance payments, pay for server space, hire an accountant, and put money away for their retirement.

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And in yet another layer of IP complexity, server owners often incorporate software provided by third-party developers, and in some cases also hire people to write code to add customized features to the server.

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