So far in this chapter, we have shown you two different forms of MTA. First we introduced you to the Postfix MTA, which is a transport agent used for routing e-mails from a mail client to or between mail servers and delivering them to the local mailboxes on the mail server using the SMTP protocol. Then we showed you another type of MTA which sometimes called an access agent and which the Dovecot program can be used for. This delivers mails from the local Postfix mailboxes to any remote mail client programs using the POP3 or IMAP protocol. Now we will introduce you to a third type of MTA, which can be termed a retrieval agent, and explain what we will use the program Fetchmail for. Nowadays, almost everybody has more than one e-mail account, from one or more different mail providers, which can be hard to maintain if you need to login to all those different webmail sites or use different accounts in your mail program. This is where Fetchmail comes into play. It is a program...
CentOS 7 Linux Server Cookbook - Second Edition
By :
CentOS 7 Linux Server Cookbook - Second Edition
By:
Overview of this book
This book will provide you with a comprehensive series of starting points that will give you direct access to the inner workings of the latest CentOS version 7 and help you trim the learning curve to master your server.
You will begin with the installation and basic configuration of CentOS 7, followed by learning how to manage your system, services and software packages. You will then gain an understanding of how to administer the file system, secure access to your server and configure various resource sharing services such as file, printer and DHCP servers across your network. Further on, we cover advanced topics such as FTP services, building your own DNS server, running database servers, and providing mail and web services. Finally, you will get a deep understanding of SELinux and you will learn how to work with Docker operating-system virtualization and how to monitor your IT infrastructure with Nagios.
By the end of this book, you will have a fair understanding of all the aspects of configuring, implementing and administering CentOS 7 Linux server and how to put it in control.
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CentOS 7 Linux Server Cookbook - Second Edition
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Table of Contents (22 chapters)
CentOS 7 Linux Server Cookbook Second Edition
Credits
About the Authors
About the Reviewer
www.PacktPub.com
Preface
Free Chapter
Installing CentOS
Configuring the System
Managing the System
Managing Packages with YUM
Administering the Filesystem
Providing Security
Building a Network
Working with FTP
Working with Domains
Working with Databases
Providing Mail Services
Providing Web Services
Operating System-Level Virtualization
Working with SELinux
Monitoring IT Infrastructure
Index
Customer Reviews