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Postfix: The Definitive Guide: A Secure and Easy-to-Use MTA for UNIX

Postfix: The Definitive Guide: A Secure and Easy-to-Use MTA for UNIX

3.7 4
by Kyle D. Dent

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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

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Postfix: The Definitive Guide 3.8 out of 5 based on 0 ratings. 4 reviews.
Anonymous More than 1 year ago
Guest More than 1 year ago
If you¿re looking for a comprehensive guide on setting up a Postfix mail server, then this isn¿t the book for you. For those that are already familiar with setting up MTAs, the information provided in ¿The Definitive Guide¿ is probably enough, but this book only covers a subset of the Postfix configuration parameters and does not provide the step-by-step instructions that many people may be expecting.
Guest More than 1 year ago
Postfix: The Definitive Guide by Kyle D. Dent would be much better titled as Postfix: Cliffnotes. It is written hastily and many sections are left incomplete. In many cases throughout the book I was left searching the web for answers to my questions on the web. The configuration file reference is nothing short of being deficient. I would estimate 50%-60% of the directives are left out completely, while existing directives contain less of a description than the comments in the configuration file. If this book was not under the veil of 'The Definitive Guide' series I might have been happier. Definitive is defined as 'serving to provide a final solution or to end a situation', which is nothing less than I have obtained in prior books I have read in this series. This book is well suited, and I recommend it, for the person who already has some Postfix or Sendmail experience. If you don't have this experience, plan to use this book as a complement to Google and the Postfix site.
Guest More than 1 year ago
Over 20 years ago, Eric Allman wrote sendmail to handle the then tricky problems of email on BSD and SystemV unix machines. Since then, email has become all pervasive to educated persons. En route, sendmail also grew vastly in complexity to handle this. So much so that just manipulating its configuration files became convoluted. Worse yet was the actual debugging of its source code. Despite all this, sendmail is still the most powerful Message Transfer Agent on unix/linux. But Venema recently tried a totally different approach. From the onset, he used a modular design and a set of 5 queues in which to process messages. In essence, we have a finite state machine, where the state of a message is the queue that it is in. Dent here shows how Postfix is fundamentally a queue management system. Analogous to how any operating system is basically a file management system. The hope is that Postfix will be easier to maintain and debug. Certainly, from a sysadmin's viewpoint, the configuration files seem simpler than sendmail's. But perhaps this is partly because Postfix does not yet have the full capability of sendmail? As a sign of the times we live in, Dent devotes 2 chapters to antispam measures possible in Postfix. This is equivalent functionality to sendmail's Milter API. Likewise, the current Postfix antispam implementations are no more effective than Milter's. Which leaves room for you to try your hand at improving this state of affairs! As Dent describes, Postfix is now open source and easily available. Still not as widely installed as sendmail. But you now have a credible alternative to it.