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Author: Peer Heinlein Publisher: No Starch Press ISBN: 1593271778 Category : Computers Languages : en Pages : 356
Book Description
IMAP (the Internet Message Access Protocol) allows clients to access their email on a remote server, whether from the office, a remote location, or a cell phone or other device. IMAP is powerful and flexible, but it's also complicated to set up; it's more difficult to implement than POP3 and more error-prone for both client and server. The Book of IMAP offers a detailed introduction to IMAP and POP3, the two protocols that govern all modern mail servers and clients. You'll learn how the protocols work as well as how to install, configure, and maintain the two most popular open source mail systems, Courier and Cyrus. Authors Peer Heinlein and Peer Hartleben have set up hundreds of mail servers and offer practical hints about troubleshooting errors, migration, filesystem tuning, cluster setups, and password security that will help you extricate yourself from all sorts of tricky situations. You'll also learn how to: * Create and use shared folders, virtual domains, and user quotas * Authenticate user data with PAM, MySQL, PostgreSQL, and LDAP * Handle heavy traffic with load balancers and proxies * Use built-in tools for server analysis, maintenance, and repairs * Implement complementary webmail clients like Squirrelmail and Horde/IMP * Set up and use the Sieve email filter Thoroughly commented references to the POP and IMAP protocols round out the book, making The Book of IMAP an essential resource for even the most experienced system administrators.
Author: Peer Heinlein Publisher: No Starch Press ISBN: 1593271778 Category : Computers Languages : en Pages : 356
Book Description
IMAP (the Internet Message Access Protocol) allows clients to access their email on a remote server, whether from the office, a remote location, or a cell phone or other device. IMAP is powerful and flexible, but it's also complicated to set up; it's more difficult to implement than POP3 and more error-prone for both client and server. The Book of IMAP offers a detailed introduction to IMAP and POP3, the two protocols that govern all modern mail servers and clients. You'll learn how the protocols work as well as how to install, configure, and maintain the two most popular open source mail systems, Courier and Cyrus. Authors Peer Heinlein and Peer Hartleben have set up hundreds of mail servers and offer practical hints about troubleshooting errors, migration, filesystem tuning, cluster setups, and password security that will help you extricate yourself from all sorts of tricky situations. You'll also learn how to: * Create and use shared folders, virtual domains, and user quotas * Authenticate user data with PAM, MySQL, PostgreSQL, and LDAP * Handle heavy traffic with load balancers and proxies * Use built-in tools for server analysis, maintenance, and repairs * Implement complementary webmail clients like Squirrelmail and Horde/IMP * Set up and use the Sieve email filter Thoroughly commented references to the POP and IMAP protocols round out the book, making The Book of IMAP an essential resource for even the most experienced system administrators.
Author: Dianna Mullet Publisher: "O'Reilly Media, Inc." ISBN: 9780596000127 Category : Computers Languages : en Pages : 412
Book Description
Presents an overview of the Internet Message Access Protocol (IMAP) and a thorough installation and management guide for the two leading UNIX-based IMAP servers, the University of Washington and the Cyrus IMAP servers. Intended for UNIX and email system administrators who are using or want to use IMAP to get email from their central mailstore to their users' client software. Annotation copyrighted by Book News, Inc., Portland, OR
Author: John Rhoton Publisher: Digital Press ISBN: 9781555582128 Category : Computers Languages : en Pages : 336
Book Description
Programmer's Guide to Internet Mail will help you create and manage network applications using powerful Internet mail, directory, and domain name protocols and standards. It succinctly explains from a programmer's perspective not simply the primary Internet mail protocols but also how to use other important network protocols such as LDAP and DNS vital to the creation of message-enabled applications. Readers will learn how these protocols and standards facilitate message submission, delivery and retrieval, support directory lookup, how they interoperate, and how they together create a framework for sophisticated networked applications. Programmer's Guide to Internet Mail will help you select the right protocol, or combination of protocols, for a specific programming function. Written by an expert e-mail and messaging consultant from Compaq, this insightful book is loaded with sample code you can use to begin and accelerate application development. Master the primary Internet mail and directory protocols Understand the interaction between Internet messaging clients and servers Troubleshoot e-mail network problems
Author: Peer Heinlein Publisher: ISBN: 9781534895706 Category : Languages : en Pages : 378
Book Description
After 10 years of development the Dovecot IMAP server is now a benchmark in terms of stability, range of features and performance. Whether you need a single IMAP server for small user groups, a cluster system with high availability for enterprises with several thousand employees, or a complex infrastructure with directors, caching proxies and active/active setups for Internet Service Providers, Dovecot offers concepts and solutions for all kinds of requirements without becoming too complex. Based on extensive experience of many Dovecot projects, this book supports administrators during the conceptual design phase, helps avoid errors and strategically wrong decisions, and shows how to implement different configurations by means of concrete and reproducible instructions.
Author: Daniel J. Barrett Publisher: "O'Reilly Media, Inc." ISBN: 1449366767 Category : Computers Languages : en Pages : 335
Book Description
Computer security is an ongoing process, a relentless contest between system administrators and intruders. A good administrator needs to stay one step ahead of any adversaries, which often involves a continuing process of education. If you're grounded in the basics of security, however, you won't necessarily want a complete treatise on the subject each time you pick up a book. Sometimes you want to get straight to the point. That's exactly what the new Linux Security Cookbook does. Rather than provide a total security solution for Linux computers, the authors present a series of easy-to-follow recipes--short, focused pieces of code that administrators can use to improve security and perform common tasks securely.The Linux Security Cookbook includes real solutions to a wide range of targeted problems, such as sending encrypted email within Emacs, restricting access to network services at particular times of day, firewalling a webserver, preventing IP spoofing, setting up key-based SSH authentication, and much more. With over 150 ready-to-use scripts and configuration files, this unique book helps administrators secure their systems without having to look up specific syntax. The book begins with recipes devised to establish a secure system, then moves on to secure day-to-day practices, and concludes with techniques to help your system stay secure.Some of the "recipes" you'll find in this book are: Controlling access to your system from firewalls down to individual services, using iptables, ipchains, xinetd, inetd, and more Monitoring your network with tcpdump, dsniff, netstat, and other tools Protecting network connections with Secure Shell (SSH) and stunnel Safeguarding email sessions with Secure Sockets Layer (SSL) Encrypting files and email messages with GnuPG Probing your own security with password crackers, nmap, and handy scripts This cookbook's proven techniques are derived from hard-won experience. Whether you're responsible for security on a home Linux system or for a large corporation, or somewhere in between, you'll find valuable, to-the-point, practical recipes for dealing with everyday security issues. This book is a system saver.
Author: Ralf Hildebrandt Publisher: No Starch Press ISBN: 1593270011 Category : Computers Languages : en Pages : 498
Book Description
A guide to using Postfix covers such topics as filtering spam and viruses, authenticating users, encrypting with TLC, and setting up mail gateways.
Author: John Levine Publisher: "O'Reilly Media, Inc." ISBN: 0596552122 Category : Computers Languages : en Pages : 252
Book Description
qmail has quietly become one of the most widely used applications on the Internet today. It's powerful enough to handle mail for systems with millions of users--Like Yahoo! Mail and Hotmail, while remaining compact and manageable enough for the smallest Unix- and Linux-based PC systems. Its component design makes it easy to extend and customize while keeping its key functions secure, so it's no wonder that adoption of qmail continues at a rapid pace.The downside? Apparently none. Except that qmail's unique design can be disorienting to those familiar with other popular MTAs (Mail Transfer Agents). If you're coming from sendmail, for instance, you might have trouble recasting your problems and solutions in qmail terms. qmail first helps you establish a "qmail frame of mind," then explores the installation, configuration, administration, and extension of this powerful MTA. Whether you're installing from scratch or managing mailing lists with thousands of users, qmail provides detailed information about how to make qmail do precisely what you wantqmail concentrates on common tasks like moving a sendmail setup to qmail, or setting up a "POP toaster," a system that provides mail service to a large number of users on other computers sending and retrieving mail remotely. The book also fills crucial gaps in existing documentation, detailing exactly what the core qmail software does.Topics covered include: Installation and configuration, including patching qmail Moving from sendmail to qmail Handling locally and remotely originated messages Managing virtual domains Logging qmail activity Tuning qmail performance Running multiple copies of qmail on the same computer Mailing list setup and management Integrating the qmail MTA with POP and IMAP delivery Filtering out spam and viruses If you need to manage mailing lists, large volumes of mail, or simply find sendmail and other MTAs too complicated, qmail may be exactly what's called for. Our new guide, qmail, will provide the guidance you need to build an email infrastructure that performs well, makes sense, and is easy to maintain.
Author: Uday R. Sawant Publisher: Packt Publishing Ltd ISBN: 1788297423 Category : Computers Languages : en Pages : 995
Book Description
Get hands-on recipes to make the most of Ubuntu Server, CentOS 7 Linux Server and RHEL 7 Server About This Book Get Linux servers up and running in seconds, In-depth guide to explore new features and solutions in server administration Maintain performance and security of your server solution by deploying expert configuration advice Who This Book Is For This Learning Path is intended for system administrators with a basic understanding of Linux operating systems and written with the novice-to-intermediate Linux user in mind. To get the most of this Learning Path, you should have a working knowledge of basic system administration and management tools. What You Will Learn Set up high performance, scalable, and fault-tolerant back ends with web and database servers Facilitate team communication with a real-time chat service and collaboration tools Monitor, manage and develop your server's file system to maintain a stable performance Gain best practice methods on sharing files and resources through a network Install and configure common standard services such as web, mail, FTP, database and domain name server technologies Create kickstart scripts to automatically deploy RHEL 7 systems Use Orchestration and configuration management tools to manage your environment In Detail Linux servers are frequently selected over other server operating systems for their stability, security and flexibility advantages.This Learning Path will teach you how to get up and running with three of the most popular Linux server distros: Ubuntu Server, CentOS 7 Server, and RHEL 7 Server. We will begin with the Ubuntu Server and show you how to make the most of Ubuntu's advanced functionalities. Moving on, we will provide you with all the knowledge that will give you access to the inner workings of the latest CentOS version 7. Finally, touching RHEL 7, we will provide you with solutions to common RHEL 7 Server challenges.This Learning Path combines some of the best that Packt has to offer in one complete, curated package. It includes content from the following Packt products: 1) Ubuntu Server Cookbook 2) CentOS 7 Linux Server Cookbook, Second Edition 3) Red Hat Enterprise Linux Server Cookbook Style and approach This easy-to-follow practical guide contains hands on examples and solutions to real word administration problems and problems faced when building your RHEL 7 system from scratch using orchestration tools.
Author: Alistair McDonald Publisher: Packt Publishing Ltd ISBN: 1847198651 Category : Computers Languages : en Pages : 540
Book Description
This book takes a practical, step by step approach to working with email servers. It starts by establishing the basics and setting up a mail server. Then you move to advanced sections like webmail access, security, backup, and more. You will find many examples and clear explanations that will facilitate learning.This book is aimed at technically confident users and new and part time system administrators in small businesses, who want to set up a Linux based email server without spending a lot of time becoming expert in the individual applications. Basic knowledge of Linux is expected.
Author: David Rice Publisher: Pearson Education ISBN: 0132701987 Category : Computers Languages : en Pages : 462
Book Description
The Real Cost of Insecure Software • In 1996, software defects in a Boeing 757 caused a crash that killed 70 people... • In 2003, a software vulnerability helped cause the largest U.S. power outage in decades... • In 2004, known software weaknesses let a hacker invade T-Mobile, capturing everything from passwords to Paris Hilton’s photos... • In 2005, 23,900 Toyota Priuses were recalled for software errors that could cause the cars to shut down at highway speeds... • In 2006 dubbed “The Year of Cybercrime,” 7,000 software vulnerabilities were discovered that hackers could use to access private information... • In 2007, operatives in two nations brazenly exploited software vulnerabilities to cripple the infrastructure and steal trade secrets from other sovereign nations... Software has become crucial to the very survival of civilization. But badly written, insecure software is hurting people–and costing businesses and individuals billions of dollars every year. This must change. In Geekonomics, David Rice shows how we can change it. Rice reveals why the software industry is rewarded for carelessness, and how we can revamp the industry’s incentives to get the reliability and security we desperately need and deserve. You’ll discover why the software industry still has shockingly little accountability–and what we must do to fix that. Brilliantly written, utterly compelling, and thoroughly realistic, Geekonomics is a long-overdue call to arms. Whether you’re software user, decision maker, employee, or business owner this book will change your life...or even save it.
Author: Peer Heinlein
Author: Peer Heinlein
Author: Dianna Mullet
Author: John Rhoton
Author: Peer Heinlein
Author: Daniel J. Barrett
Author: Ralf Hildebrandt
Author: John Levine
Author: Uday R. Sawant
Author: Alistair McDonald
Author: David Rice