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Postfix: The Definitive Guide (Classique Us) (Englisch) Taschenbuch – 9. Januar 2004

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"Excellent book." Information Security Bulletin, September 2004

Synopsis

Postfix is a Mail Transfer Agent (MTA): software that mail servers use to route email. Postfix is highly respected by experts for its secure design and tremendous reliability. And new users like it because it's so simple to configure. In fact, Postfix has been adopted as the default MTA on Mac OS X. It is also compatible with sendmail, so that existing scripts and programs continue to work seamlessly after it is installed. Postfix was written by well-known security expert Wietse Venema, who reviewed this book intensively during its entire development. Author Kyle Dent covers a wide range of Postfix tasks, from virtual hosting to controls for unsolicited commercial email. While basic configuration of Postfix is easy, every site has unique needs that call for a certain amount of study. This book, with careful background explanations and generous examples, eases readers from the basic configuration to the full power of Postfix. It discusses the Postfix interfaces to various tools that round out a fully scalable and highly secure email system.

These tools include POP, IMAP, LDAP, MySQL, Simple Authentication and Security Layer (SASL), and Transport Layer Security (TLS, an upgrade of SSL). A reference section for Postfix configuration parameters and an installation guide are included. Topics include: Basic installation and configuration DNS configuration for email Working with POP/IMAP servers Hosting multiple domains (virtual hosting) Mailing lists Handling unsolicited email (spam blocking) Security through SASL and TLS From compiling and installing Postfix to troubleshooting, Postfix: The Definitive Guide offers system administrators and anyone who deals with Postfix an all-in-one, comprehensive tutorial and reference to this MTA.

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Von mk-bk am 16. November 2013
Format: Taschenbuch Verifizierter Kauf
Ich hatte mir ehrlich gesagt mehr Sachinformation erhofft. Dieses Buch spricht zahlreiche typische und auch weniger typische Konfigurationsmöglichkeiten und -szenarien an, aber wer etwas technisches Hintergrundwissen über die interne Arbeitsweise von Postfix erwartet, der wird enttäuscht.

Was dieser "Definitive Guide" vermittelt, bekommt man auch, wenn man eine Handvoll der im Internet angebotenen Tutorials zusammenfasst.
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Format: Kindle Edition Verifizierter Kauf
Kann ich nur wärmstens jedem empfehlen der sich mit postfix tiefer beschäftigen möchte. Alles wichtige ist enthalten, ohne überladen zu wirken.

Allerdings ist dieses Buch wirklich eher für die gedacht, die sich intensiv ein mal in Postfix rein arbeiten möchten. Man kann zwar auch gut drin nachschlagen, aber eine Vollständige Referenz ist es natürlich nicht. Ich denke wenn man es einmal durch hat, wird man nicht mehr so oft rein schauen und lieber direkt in der postfix doku nach dem suchen was man möchte.
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Format: Taschenbuch
Habe das Buch gestern bekommen und bin begeistert. Dent hat hier alle Informationen sehr schön zusammengefasst (Stand Postfix 2.0.10). Es ist in Zusammenarbeit mit Wietse Venema (Postfix Entwickler) enstanden. Dieses Buch bietet dem fortgeschrittendem Administrator und dem Profi, in leicht verständlichem Englisch, alle Informationen die im Umgang mit Postfix wichtig sind. Sehr gut gelungen ist auch die Beschreibung der Installation aus den Quellen. Hätte ich dieses Buch eher gehabt hätte ich mir viele Fehler erspart.
Kurzum: KAUFBEFEHL für jeden alle Infos über Postfix in einem schönen Buch zusammengefasst haben will.
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Die hilfreichsten Kundenrezensionen auf Amazon.com (beta)

Amazon.com: 4.2 von 5 Sternen 25 Rezensionen
34 von 35 Kunden fanden die folgende Rezension hilfreich
4.0 von 5 Sternen Well written, flawed guide to Postfix 9. August 2004
Von A Williams - Veröffentlicht auf Amazon.com
Format: Taschenbuch
After many years bashing my head against sendmail in all it's gory details I had amassed a fair amount of knowledge and documentation on handling the Mail Transfer Agent (MTA) in Linux and Mac OS X. This caused a fair amount of teeth gnashing when I discovered it had gone the way of all flesh in OS X Panther to be replaced with Postfix.

Fortunately, my first needs were simple and I came to realise that Postfix was a much easier system to install and maintain. Now that my needs are more complex, I was glad when this book hit my desk at exactly the same time as I started upgrading the corporate servers from Mac OS 9 to OS X Server.

Postfix: The Definitive Guide seems to fit the bill. It is a well-written and well-constructed guide to mail systems in general and Postfix in particular.

The book starts with a good overview of the underlying technology in Chapters 1 and 2. I can't blame Dent for my slight confusion in the section on addresses and headers - having RFC822 superseded by RFC2822 was just a little too much coincidence for this particular "bear of little brain." He then follows it with a chapter discussing Postfix's architecture, important since Postfix uses a much more modular approach than the sendmail monolith, with each part of the mail handling process a different executable and the single queue turned into five.

Once the background is well covered, Dent then gets onto the nitty-gritty of configuring and administering Postfix. He has certainly covered everything I needed, including spam handling, multiple domains, relaying, SASL authentication and using LDAP. Once I'd finished grokking all that, and getting it integrated into my servers, I had a corporate email system up in three sites that replaced and improved upon a couple of thousand dollars worth of proprietary dreck. Happy is an understatement.

Dent's writing is sometimes a little patchy, though never bad. The technical detail does seem overpowering in places, though, and I occasionally found myself reading a section through more than once with a configuration file open in front of me. There are certainly spots where a little more hand holding and care with the writing would have been appreciated. (If you are a little more cognizant of the interstices of mail systems then you may not have the same problem.)

I did, however, appreciate the appendices enormously. The four appendices cover configuration parameters, Postfix commands, installation, and an FAQ. My system came with Postfix compiled and installed just as I required it so I didn't get a chance to thoroughly test out Dent's installation procedure (though it looks good); the other three continue to be useful.

If you want to have a look for yourself, then the usual O'Reilly page is complete with a table of contents and index, but this time no example chapter is provided (how come, O'Reilly?). You can also get an expanded version of the FAQ in Appendix 4 from Dent's website. A better example of Dent's writing style is an excellent article on troubleshooting with Postfix logs at O'Reilly's Onlamp.com.

This is a good book, Dent has explained the underlying methodology and use of Postfix well, taken the reader through all aspects of this MTA system and explained both the why and the how. I would recommend this book (and, as a result Postfix) to anyone looking for an MTA and a guide to configuring and running it.
24 von 26 Kunden fanden die folgende Rezension hilfreich
5.0 von 5 Sternen This is a great book. 14. August 2004
Von J. O. - Veröffentlicht auf Amazon.com
Format: Taschenbuch
After over a month of trying to get my first email server up and running using the try a setting, see what happens method, I finally gave up and bought this book. Now I'm in business.

Everywhere I read, people claimed the easiest to configure MTA was postfix, so that is why I began to use it. True, the documention on the website is helpful and so are the included examples, but if you don't have the concepts down, that is useless.

Thats where this great book comes in. This book isn't just a paper copy of the online docs, unlike most other computer books. It explains what stuff is, does, and what it means. I can read the config file just fine, I just don't know what the settings do. For example, the online docs showed how to setup masquerading and examples, but never told me what that meant. From a newbie standpoint, the masquerade meant the same thing as an alias. Well, those words mean the same thing. I need the vocabulary from the book to help me understand. Conanical is a common work in computer land? Maybe in Silicon Valley but not in NJ.

A glowing chapter is DNS and e-mail which more than pays for the entire book. Not only to I understand DNS better, I can setup a backup mail system. Another great thing is the author shows you an entire setup zone file in one chunk, instead of line by line explanations and never showing you the whole thing put together. DNS and Bind book anyone? For shame.

Also, The Hosting Multiple Domains is a fantastic chapter.

Anyways, if you are lost and feeling like and idiot like I was, get this book. Thanks Mr. Dent for a fantastic book that is clear and easy to understand.
12 von 13 Kunden fanden die folgende Rezension hilfreich
5.0 von 5 Sternen Definitely Definitive 14. Januar 2004
Von David Boreham - Veröffentlicht auf Amazon.com
Format: Taschenbuch Verifizierter Kauf
I remember folk on the Postfix mailing list complaining about how long it was taking for this book to be written. Well, I've been writing a computer book for the past year and all I can say is 'I feel your pain Kyle'. Anyway, the wait has been well worthwhile, and possibly a benefit because the book deals with several new features only recently added to Postfix.
You know that an O'Reilly book is at least going to be half-decent, and possibly excellent. In this case Mr. Dent's work has hit the mark spot on, and to my mind earns an excellent rating. Why ? Well, first of all his writing style is clear, concise and easy to read. Secondly he's covered everything you'd want to know about Postfix, rather than an easy feature subset. And third, he's avoided the common pitfall with software guide books where the writer simply presents a jazzed-up version of a reference guide---lists of configuration parameters and their explaination making up the bulk of the book.
Kyle takes the time, and it's much appreciated by the way, to explain how Postfix features work, why they exist (very important), and when they should be used (or not used). I was particularly overjoyed to see that he has covered the configuration of the server to support both SASL and TLS. I'm sure that those chapters will save me _days_ of hair pulling in crypto-hell.
In summary: If you already run Postfix, and you're not Wietse Venema (well, I'm sure he has a complimentary copy already), then RUN out and buy this book. If you don't run Postfix, but were thinking of changing to a better MTA, then consider your options again because now that this book exists, Postfix is a more attractive choice for many admins. Even if you don't ever plan to run Postfix, this book is a pretty good read for those who are just plain interested in e-mail technology.
12 von 13 Kunden fanden die folgende Rezension hilfreich
5.0 von 5 Sternen Finally I Feel Comfortable with Postfix 2. März 2004
Von Amazon Customer - Veröffentlicht auf Amazon.com
Format: Taschenbuch
After getting my Postfix server running using online documentation I knew that I had been guessing, and that I would need help to go farther. I started reading the Blum book on the subject, and learned a few things, but I was no less confused.
With Dent's "Postfix: The Definitive Guide" I found what I needed. I have a much clearer understanding now, and I have been able to extend some of the sample code to things I want, such as accepting mail from certain domains on a per-user basis. Highly recommended.
7 von 7 Kunden fanden die folgende Rezension hilfreich
4.0 von 5 Sternen Good reference guide for PostFix 26. April 2005
Von devnullak - Veröffentlicht auf Amazon.com
Format: Taschenbuch
PostFix is a replacement mail server, MTA, for Unix based systems that

formerly used Sendmail or other variants. PostFix was written to be a

drop in replacement for Sendmail but with it's own variations on control

files.

This book outlines most of the common issues in dealing with setting up

PostFix. The author takes the reader through the design concerns outlined

by the author of the program, Wietse Venema, who wrote the forward of the

book.

Sendmail has been a staple of the mail delivery world but it has a well

deserved reputation for being hard to setup, administer and understand.

The O'Reilly book on Sendmail is at least 3 times as large as this book.

There is alot to learn about its' macro language and using M4 to build

control files. Sendmail is a very hard program for a beginner to

understand and configure properly.

The author spends the first few chapters discussing how a mail server is

supposed to work; how the DNS system interacts with the mail system. There

are well laid out block diagrams to show the flow of email through a

system. Any SysAdmin who has spent time administering a mail system can

probably skip the first few chapters. Those who are new to running a mail

server should find the begining chapters enlightening.

PostFix mostly uses easy to read control files that don't require processing.

The program can be set up to use the Unix standard mbox delivery format or

the newer maildir format. The book explains the pros and cons of the 2

storage formats both from the MTA perspective and the pop or imap

interface.

Most of the more common configuration tweaks used in securing a Sendmail

system also apply to a PostFix installation. They are just easier to set

up in PostFix with the examples provided.

The book has a section devoted to setting up secure mail relay using the

Cyrus SASL libraries. It details setting up the password database via the

Unix standard or shadow format, SASL, LDAP PAM or MYSQL formats. The

author discusses ways to further secure the connection by using TLS

connections to ensure passwords are not compromised.

PostFix has some built in anti-spam tools. The book has a chapter devoted

to to pros and cons of the various approaches. Examples of "reasonable"

and "paranoid" approaches for setting up PostFix are provided. A simpler

apporoach than jumping directly into Spam Assassin or other

spam pre-processors

Mailing lists are another feature that PostFix can manage. The book has

examples of various simple ways of setting up mailing lists short of

installing a separate program like MajorDomo. This is a handy feature.

There are Appendixes intended to walk a user through the compiling process

which will help users not familiar with using Make. There is a listing of

the PostFix parameter commands and what they all mean.

PostFix the Definitive Guide is a well written, easy to read step by step

instruction book for using the PostFix mail server. Using this book as a

reference, an experienced SysAdmin should make the transition from

Sendmail to PostFix without much trouble. For someone new to the world of

MTA's, the book should answer most of the questions associated with

getting a PostFix mail server up and running.

This is another O'Reilly book that should be on a SysAdmin's bookshelf.
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