Summary
The time has come to summarize what has been learned in this chapter. We began with a quick look at how the Postfix mail transfer agent works and then looked at how to install the software and prepare the basic configuration.
We then examined various methods to stop spam and other unwanted messages. We introduced virtual alias domains to fully enable your mail server to host many domains. Finally, we took a look at a few structured techniques to help you analyze and solve Postfix problems.
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