- Taschenbuch: 240 Seiten
- Verlag: Packt Publishing (27. September 2004)
- Sprache: Englisch
- ISBN-10: 1904811124
- ISBN-13: 978-1904811121
- Größe und/oder Gewicht: 19 x 1,4 x 23,5 cm
- Durchschnittliche Kundenbewertung: Schreiben Sie die erste Bewertung
- Amazon Bestseller-Rang: Nr. 878.228 in Fremdsprachige Bücher (Siehe Top 100 in Fremdsprachige Bücher)
- Komplettes Inhaltsverzeichnis ansehen
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SpamAssassin: A practical guide to integration and configuration: In depth guide to implementing antispam solutions using SpamAssassin (English Edition) (Englisch) Taschenbuch – 7. Oktober 2004
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In depth guide to implementing antispam solutions using SpamAssassin Features At A Glance Implement the right antispam solution for your network and your business requirements; Learn how to detect and prevent spam; Optimize SpamAssassin for all major mail servers and clients; Discover how to use SpamAssassin as a service; Spam has become a serious problem for businesses, wasting employees' time and costing millions of dollars. To combat this growing problem, a number of applications and services have been developed, and SpamAssassin is one of the most effective and popular Open Source solutions. Free to use, flexible, and effective, SpamAssassin has become the most popular Open Source antispam application. Its unique combination of power and flexibility make it the right choice. This book will now help you set up and optimize SpamAssassin for your network. As a system administrator, it's down to you to implement, configure and adapt SpamAssassin to fight the Spam War. Fortunately, in SpamAssassin you chose well. Its power and flexibility make it a potent tool. However you also know that any flexible application is only as good as how it's set up and configured. This book is a compr
Über den Autor und weitere Mitwirkende
Alistair McDonald is a freelance IT consultant based in the UK. He has worked in IT for over 15 years and specializes in C++ and Perl development and IT infrastructure management. He is a strong advocate of open source, and has strong cross-platform skills. He prefers vim over vi, emacs over Xemacs or vim, and bash over ksh or csh. He is very much a family man and spends as much time as possible with his family enjoying life.
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They do not get much into detail, expecting you know what you are doing.
Then again, I bought this book around the time that I started using linux.
The book does touch on some problems, but then just dumps you off wondering.
Also, I've found SpamAssassin to be overrated; it's only plus being the simplicity of setup.
While it is very difficult to setup, I've found that dSPAM is far superior in terms of accuracy.
The most recent version surveyed here is 3.0. And there is one key innovation in it, and also in the earlier 2.63 version. Namely what it calls SURBL = Spam URI Real time Blacklist. A powerful idea. You block a message as spam, if its body has URIs in an SURBL. It should be said that it took the SA coders a long time to recognise and implement this idea.
Another issue is how to generate an SURBL. Here, the author just says that you can get these from external sources, like Spamhaus, just like you would for an RBL. More discussion here might have been helpful.
There is little recognition in the book that the SURBL method has significant advantages over a Bayesian, the latter of which gets extensive coverage. The SUBRL method is faster in extracting URIs from a message body and then comparing against the SURBL, than in comparing the message's words to the corpus of the Bayesian. All the more so if the latter word comparision is restricted to words that are not in HTML tags and are visible to the reader.
Also, if the SUBRL has domains that are definitely considered to be spammer domains, then using it is deterministic. Unlike the stochastic general nature of SA's approach, which totes up a spam likelihood score. The deterministic aspect is far stronger.
Plus, there is no need for regular manual training, as with the Bayesian - either at the user or sysadmin level. But a casual reader will miss all this. The SURBL is given minimal description.
There is extensive coverage of various techniques to improve filtering and accuracy, making spamassassin effective for your own specific needs. The chapters on rules and using online antispam services and databases are great.
I particularly liked the information on best practices, which reflects the author's experience.
This book seems to cover every aspect of spamassassin, and it does that very well.
to installing, configuring, and fine tuning SpassAssassin, but it thoroughly covers all the topics I'll ever need to know about. I'm a beginner to SpamAssassin, and now feel like an expert! Even friends who already knew SpamAssassin well find themselves looking at this when they get stuck.
I found the book had plenty of coverage of SURBL. There's a whole chapter dedicated to using network tests to check URL blacklists.