Philip Hazel: Exim: The Mail Transfer Agent



O see discussion of an ISP type mail server with multiple domains which is lackingFinally there is lack of reference material in the appendices a short form listing of command options and configuration options would be a great additionWarning this book is for version 3 and version 4 is now available although version 3 is still used This book was a disappointment While first reading the book I thought it was great However after I tried actually configuring the xim program I realized this book included only superficial Poisoned Secrets (Murder and Mayhem examples Any serious configuration reuired an in depth understanding of thexim program far beyond the overview of this book The necessary bits of information are scattered throughout the book Unfortunately these bit were often not referenced in the Index This reuired my reading large sections trying locate a specific bit of information The book s index is weak It often includes references to variables options and features that reuires the specific name of the information being sought to locate In contrast Exim s downloadable pdf documentation has the advantage of being uickly computer searchable After being frustrated with this book I turned to the downloadable documentation and found it much useful. Is Safe Words easy to configure You never have to deal with ruleset 3 or worry that a misplaced asterisk will cause an inadvertent mail bombWhile a basic configuration isasy to read and can be created uickly Exims syntax and behavior do get subtle as you nter complicated areas like virtual hosting filtering and automatic replies This book is a comprehensive survey that provides uick information for people in a hurry as well as thorough coverage of advanced material.

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If you can t or won t run sendmail then IMO your only two real alternatives are postfix and Exim I still believe that sendmail is a better choice but both postfix and Exim are still uite goodIf you decide to run Exim there are few people who could give you a better insight into how the program is configured and how it works internally than the author of the program Phil HazelHowever keep in mind that the book is primarily oriented around version 3 of this program and version 4 with some significant changes has already been produced More information is available at URL This won t replace the official documentation specially since it covers an old outdated version of EXIM but covers Pursuit of Justice enough to be worthwhile as a supplement Still I was rather disappointed that much of what I was trying to do such as set up spam filtering wasn t covered by the b Exim the MTA would be an appropriate book for someone who does not know anything about mail and suddenly needs to manage a server and EXIM would be a good Dangerous to Touch e mail server for this person to use EXIM is the default MTA in Debian and other Unix distributions tooExim the MTA has been writtenntirely Once Upon a Seduction (Its All About Attitude except for contributed patches by Philip Hazel who continues to maintain it In Exim deliverslectronic mail both local and remote It has all the virtues of a good postman its Rodeo Daughter easy to talk to reliablefficient and My Guilty Pleasure (Harlequin Blaze eager to accommodateven the most complex special reuests Its the default mail transport agent installed on some Linux systems runs on many versions of Unix and is suitable for any TCPIP network with any combination of hosts and nd user mail softwareExim is growing in popularity because it is open source scalable and rich.

Onclusion if I wasn t already in the I m reluctant to criticize someone as talented as Philip Hazel who produces such a high uality product distributes it for free and spends so much time supporting itHowever this book and the online documentation he provides is xtremely difficult to use He admits that he didn t want to write this book and hoped someone A Wanted Man (Silhouette Intimate Moments, else would have Indeed it would have been better if someonelse hadThe book contains an My Spy (Mission: Impassioned, exceptional amount of background information on mail protocols and procedures and a lot of detail on Exim itself If I had 5 weeks to read and absorb it all it would be wondersfulFor busy systems administrators using this book is a hard work finding the information needed is slow and then understanding it is difficult Dr Hazel s writing style is terse and rather like a mathematical text There is no fluff in it s 600 pages I find myself reading sentences repeatedly trying to understand them Also the implications of certain information is not made obviousHis lack of realisticxamples is also a serious short coming He glosses over remote access of mail via POP IMAP and SMTP authentication Until You Loved Me (Silver Springs, even though this is the most common way of accessing mail these days I wouldspecially like In features such as the followingCompatibility with the calling interfaces and options of Sendmail for which Exim is usually a drop in replacementLookups in LDAP servers MySL and PostgreSL databases and NIS or NIS servicesSupport for many kinds of address parsing including regular The Baby Album expressions that are compatible with Perl 5Sophisticatedrror handlingInnumerable tuning parameters for improving performance and handling normous volumes of mailBest of all Exim.