38 lines
2.0 KiB
Markdown
38 lines
2.0 KiB
Markdown
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# Why build your own mail server instead of outsourcing to external entities
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Quote from [Spamhaus news article](http://www.spamhaus.org/news/article/719/a-survival-guide-for-the-small-mail-server):
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> outsourcing (the mail service) does not come without costs, even when the
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> outsourced service appears to be "free". Hidden costs include:
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>
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> * Another organization can see the content of all messages. In some cases,
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> the contents of messages are stored on the outsourcing company's servers
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> indefinitely. External access to unencrypted emails poses privacy and
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> confidentiality issues. Furthermore, the outsourcing company may be located
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> in another country and be subjected to different regulations and obligations.
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>
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> * In some cases, the outsourcing company's terms and conditions allow it to
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> search the content of emails to aid in targeting advertising, which poses
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> even greater privacy and confidentiality problems.
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>
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> * The organization no longer has control of its own email security.
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> Server-based encryption and authentication is managed by the outsourcing
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> company, requiring end-to-end encryption for sensitive communications.
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>
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> * Large companies with many customers are often a target of cybercrime
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> attacks aimed at stealing customer data, and some of these attacks have
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> succeeded.
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>
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> * Inspection of SMTP transaction logs may be impossible for the end user.
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> Troubleshooting failed deliveries and other email problems requires
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> interacting with an external support desk. Support desks are sometimes
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> slow to respond. First-line support, in particular, might lack the
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> training and access to fix any but simple problems, requiring escalation
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> and further delays.
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>
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> * Sharing a mail server with other organizations can cause delivery issues
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> when a user at another organization sends spam through that mail server.
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> When the outsourcing company fails to detect and block spam, or is slow to
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> terminate service to spammers, the likelihood of problems increases
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> substantially.
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