Conclusion
E-mail is an important part of any Web site, and you need to plan its configuration carefully to make it a seamless part of the Web experience of your visitors. Without it, your Web site won't seem complete.
A fully functioning Web site is just the beginning. It needs to be maintained to reduce the risk of failure and monitored to help detect potential problems. Chapter 22, "Monitoring Server Performance," discusses many Linux-based tools that you can use to track the health of your Linux server.
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