Introduction
                                    
                                        Mail systems using Postfix
                                            
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                                        What you will need
                                            
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                                        Virtual machine configuration
                                            
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                                        Lab setup
                                            
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                                        Set hostnames
                                            
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                                1. Email Systems and Terminology
                                    
                                        About email
                                            
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                                        How email works
                                            
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                                        Mail agents
                                            
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                                2. Introducing Postfix
                                    
                                        Install Postfix
                                            
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                                        Postfix services
                                            
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                                        Postfix commands
                                            
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                                        Postfix logging
                                            
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                                        Postfix and Security-Enhanced Linux (SELinux)
                                            
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                                3. Postfix Configuration Files
                                    
                                        The access file
                                            
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                                        The canonical file
                                            
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                                        The generic file
                                            
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                                        The relocated file
                                            
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                                        The transport file
                                            
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                                        The virtual file
                                            
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                                        The aliases file
                                            
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                                        The master file
                                            
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                                        The main configuration file
                                            
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                                4. Configure Postfix
                                    
                                        Configure a local mail server
                                            
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                                        Send email from a remote client
                                            
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                                        Create a null-client mail relay
                                            
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                                        Create a mail gateway
                                            
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