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Linux Email: Set up and Run a Small Office Email Server by Patrick Ben, Magnus Back, Alistair McDonald, Carl Taylor, David Rusenko

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Troubleshooting Postfix Problems

I realize having a whole section devoted to troubleshooting Postfix might look bad. Is Postfix really so hard to get right? No, it is not; quite the opposite in fact. Postfix provides many tools to simplify problem solving and these tools need a section of their own. While implementing new features in your Postfix mail system, do it step by step. The more insecure you are in what you are doing, the smaller steps you should take. If you run into problems, you will discover them early and it will be easier to figure out what went wrong. This is especially true when implementing complex lookup tables using MySQL databases. To reiterate what was said before: if you are even slightly uncomfortable with complex lookup ...

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