Philip Hazel Exim: The Mail Transfer Agent

ISBN 13: 9780596000981

Exim: The Mail Transfer Agent

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9780596000981: Exim: The Mail Transfer Agent

Exim delivers electronic mail, both local and remote. It has all the virtues of a good postman: it's easy to talk to, reliable, efficient, and eager to accommodate even the most complex special requests. It's the default mail transport agent installed on some Linux systems, runs on many versions of Unix, and is suitable for any TCP/IP network with any combination of hosts and end-user mail software.Exim is growing in popularity because it is open source, scalable, and rich in features such as the following:

  • Compatibility with the calling interfaces and options of Sendmail (for which Exim is usually a drop-in replacement)
  • Lookups in LDAP servers, MySQL and PostgreSQL databases, and NIS or NIS+ services
  • Support for many kinds of address parsing, including regular expressions that are compatible with Perl 5
  • Sophisticated error handling
  • Innumerable tuning parameters for improving performance and handling enormous volumes of mail
Best of all, Exim is easy to configure. You never have to deal with ruleset 3 or worry that a misplaced asterisk will cause an inadvertent mail bomb.While a basic configuration is easy to read and can be created quickly, Exim's syntax and behavior do get more subtle as you enter complicated areas like virtual hosting, filtering, and automatic replies. This book is a comprehensive survey that provides quick information for people in a hurry as well as thorough coverage of more advanced material.

Le informazioni nella sezione "Riassunto" possono far riferimento a edizioni diverse di questo titolo.

L'autore:

Philip Hazel has a Ph.D. in applied mathematics, but has spent the last 30 years writing general-purpose software for the Computing Service at the University of Cambridge in England. Since moving from an IBM mainframe to Unix about ten years ago, he has gotten more and more involved with email. Philip started developing Exim in 1995 and is its sole author.

Contenuti:

Preface; Organization of the Book; Conventions Used in This Book; Comments and Questions; Acknowledgments; Chapter 1: Introduction; Chapter 2: How Internet Mail Works; 2.1 Different Types of MTA; 2.2 Internet Message Standards; 2.3 RFC 822 Message Format; 2.4 The Message “On the Wire”; 2.5 Summary of the SMTP Protocol; 2.6 Forgery; 2.7 Authentication and Encryption; 2.8 Routing a Message; 2.9 Checking Incoming Mail; 2.10 Overview of the DNS; 2.11 DNS Records Used for Mail Routing; 2.12 Related DNS Records; 2.13 Common DNS Errors; 2.14 Role of the Postmaster; Chapter 3: Exim Overview; 3.1 Exim Philosophy; 3.2 Exim’s Queue; 3.3 Receiving and Delivering Messages; 3.4 Exim Processes; 3.5 Coordination Between Processes; 3.6 How Exim Is Configured; 3.7 How Exim Delivers Messages; 3.8 Local and Remote Addresses; 3.9 Processing an Address; 3.10 A Simple Example; 3.11 Complications While Directing and Routing; 3.12 Complications During Delivery; 3.13 Complications After Delivery; 3.14 Use of Transports by Directors and Routers; Chapter 4: Exim Operations Overview; 4.1 How Exim Identifies Messages; 4.2 Watching Exim at Work; 4.3 The Runtime Configuration File; 4.4 The Default Qualification Domain; 4.5 Handling Frozen Bounce Messages; 4.6 Reducing Activity at High Load; 4.7 Limiting Message Sizes; 4.8 Parallel Remote Delivery; 4.9 Controlling the Number of Delivery Processes; 4.10 Large Message Queues; 4.11 Large Installations; Chapter 5: Extending the Delivery Configuration; 5.1 Multiple Local Domains; 5.2 Virtual Domains; 5.3 Mailing Lists; 5.4 Using an External Local Delivery Agent; 5.5 Multiple User Addresses; 5.6 Mixed Local/Remote Domains; 5.7 Delivering to UUCP; 5.8 Ignoring the Local Part in Local Deliveries; 5.9 Handling Local Parts in a Case-Sensitive Manner; 5.10 Scanning Messages for Viruses; 5.11 Modifying Message Bodies; Chapter 6: Options Common to Directors and Routers; 6.1 Conditional Running of Routers and Directors; 6.2 Changing a Driver’s Successful Outcome; 6.3 Adding Data for Use by Transports; 6.4 Debugging Directors and Routers; 6.5 Summary of Director/Router Generic Options; Chapter 7: The Directors; 7.1 Conditional Running of Directors; 7.2 Optimizing Single-Level Aliasing; 7.3 Adding Data for Use by Transports; 7.4 The aliasfile and forwardfile Directors; 7.5 The aliasfile Director; 7.6 The forwardfile Director; 7.7 The localuser Director; 7.8 The smartuser Director; Chapter 8: The Routers; 8.1 Timeouts While Routing; 8.2 Domains That Route to the Local Host; 8.3 The lookuphost Router; 8.4 The domainlist Router; 8.5 The ipliteral Router; 8.6 The queryprogram Router; Chapter 9: The Transports; 9.1 Options Common to All Transports; 9.2 The smtp Transport; 9.3 Environment for Local Transports; 9.4 Options Common to the appendfile and pipe Transports; 9.5 The appendfile Transport; 9.6 The pipe Transport; 9.7 The lmtp Transport; 9.8 The autoreply Transport; Chapter 10: Message Filtering; 10.1 Examples of Filter Commands; 10.2 Filtering Compared with an External Delivery Agent; 10.3 Setting Up a User Filter; 10.4 Setting Up a System Filter; 10.5 Testing Filter Files; 10.6 Format of Filter Files; 10.7 Significant Actions; 10.8 Filter Commands; 10.9 The add Command; 10.10 Delivery Commands; 10.11 Mail Commands; 10.12 Logging Commands; 10.13 The testprint Command; 10.14 The finish Command; 10.15 Obeying Filter Commands Conditionally; 10.16 Additional Features for System Filters; Chapter 11: Shared Data and Exim Processes; 11.1 Message Files; 11.2 Locking Message Files; 11.3 Hints Files; 11.4 Log Files; 11.5 User and Group IDs for Exim Processes; 11.6 Process Relationships; 11.7 The Daemon Process; 11.8 Reception Processes; 11.9 Queue Runner Processes; 11.10 Delivery Processes; 11.11 Summary of Message Handling Process Types; 11.12 Other Types of Process; Chapter 12: Delivery Errors and Retrying; 12.1 Retrying After Errors; 12.2 Remote Delivery Errors; 12.3 Local Delivery Errors; 12.4 Routing and Directing Errors; 12.5 Retry Rules; 12.6 Computing Retry Times; 12.7 Using Retry Times; 12.8 Retry Rule Examples; 12.9 Timeout of Retry Data; 12.10 Long-Term Failures; 12.11 Ultimate Address Timeout; 12.12 Intermittently Connected Hosts; Chapter 13: Message Reception and Policy Controls; 13.1 Message Sources; 13.2 Message Size Control; 13.3 Messages from Local Processes; 13.4 Unqualified Addresses from Remote Hosts; 13.5 Checking a Remote Host; 13.6 Checking Remote Sender Addresses; 13.7 Checking Recipient Addresses; 13.8 Checking Header Line Syntax; 13.9 Relay Control; 13.10 Customizing Prohibition Messages; 13.11 Incoming Message Processing; Chapter 14: Rewriting Addresses; 14.1 Automatic Rewriting; 14.2 Configured Rewriting; 14.3 Rewriting Rules; 14.4 Rewriting Patterns; 14.5 Rewriting Flags; 14.6 A Further Rewriting Example; 14.7 Testing Rewriting Rules; Chapter 15: Authentication, Encryption, and Other SMTP Processing; 15.1 SMTP Authentication; 15.2 Encrypted SMTP Connections; 15.3 SMTP over TCP/IP; 15.4 Local SMTP; 15.5 Batched SMTP; Chapter 16: File and Database Lookups; 16.1 Single-Key Lookup Types; 16.2 Query-Style Lookup Types; 16.3 Quoting Lookup Data; 16.4 NIS+; 16.5 LDAP; 16.6 MySQL and PostgreSQL; 16.7 DNS Lookups; 16.8 Implicit Keys in Query-Style Lookups; 16.9 Temporary Errors in Lookups; 16.10 Default Values in Single-Key Lookups; 16.11 Partial Matching in Single-Key Lookups; 16.12 Lookup Caching; Chapter 17: String Expansion; 17.1 Variable Substitution; 17.2 Header Insertion; 17.3 Operations on Substrings; 17.4 Character Translation; 17.5 Text Substitution; 17.6 Conditional Expansion; 17.7 Lookups in Expansion Strings; 17.8 Extracting Fields from Substrings; 17.9 IP Address Masking; 17.10 Quoting; 17.11 Reexpansion; 17.12 Running Embedded Perl; 17.13 Testing String Expansions; Chapter 18: Domain, Host, and Address Lists; 18.1 Negative Items in Lists; 18.2 List Items in Files; 18.3 Lookup Items in Lists; 18.4 Domain Lists; 18.5 Host Lists; 18.6 Address Lists; Chapter 19: Miscellany; 19.1 Security Issues; 19.2 Privileged Users; 19.3 RFC Conformance; 19.4 Timestamps; 19.5 Checking Spool Space; 19.6 Control of DNS Lookups; 19.7 Bounce Message Handling; 19.8 Miscellaneous Controls; Chapter 20: Command-Line Interface to Exim; 20.1 Input Mode Control; 20.2 Additional Message Data; 20.3 Immediate Delivery Control; 20.4 Error Routing; 20.5 Queue Runner Processes; 20.6 Configuration Overrides; 20.7 Watching Exim’s Queue; 20.8 Message Control; 20.9 Testing Options; 20.10 Options for Debugging; 20.11 Terminating the Options; 20.12 Embedded Perl Options; 20.13 Compatibility with Sendmail; 20.14 Calling Exim by Different Names; Chapter 21: Administering Exim; 21.1 Log Files; 21.2 Log Destination Control; 21.3 Format of Main Log Entries; 21.4 Cycling Log Files; 21.5 Extracting Information from Log Files; 21.6 Watching What Exim is Doing; 21.7 The Exim Monitor; 21.8 Maintaining Alias and Other Datafiles; 21.9 Hints Database Maintenance; 21.10 Mailbox Maintenance; Chapter 22: Building and Installing Exim; 22.1 Prerequisites; 22.2 Fetching and Unpacking the Source; 22.3 Configuration for Building; 22.4 The Building Process; 22.5 Installing Exim; 22.6 Testing Before Turning On; 22.7 Turning Exim On; 22.8 Installing Documentation in Info Format; 22.9 Upgrading to a New Release; Summary of String Expansion; Expansion Items; Expansion Conditions; Expansion Variables; Regular Expressions; Testing Regular Expressions; Metacharacters; Backslash; Changing Matching Options; Circumflex and Dollar; Dot (Period, Full Stop); Square Brackets; POSIX Character Classes; Vertical Bar; Subpatterns; Repetition; Back References; Assertions; Once-Only Subpatterns; Conditional Subpatterns; Comments; Recursive Patterns; Performance; Colophon;

Le informazioni nella sezione "Su questo libro" possono far riferimento a edizioni diverse di questo titolo.

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Descrizione libro O Reilly Media, Inc, USA, United States, 2001. Book. Condizione libro: New. 232 x 174 mm. Language: English . Brand New Book. Exim delivers electronic mail, both local and remote. It has all the virtues of a good postman: it s easy to talk to, reliable, efficient, and eager to accommodate even the most complex special requests. It serves as the default mail transport agent installed on some Linux systems, runs on many versions of Unix, and is suitable for any TCP/IP network with any combination of hosts and end-user mail software. Exim is growing in popularity because it is open source, scalable, and rich in features: compatibility with the calling interfaces and options of sendmail (for which Exim is usually a drop-in replacement); lookups in LDAP servers, MySQL and PostgreSQL databases, and NIS or NIS+ services; support for many kinds of address parsing, including regular expressions that are compatible with Perl 5; sophisticated error handling; and innumerable tuning parameters for improving performance and handling enormous volumes of mail; Exim is easy to configure. You never have to deal with ruleset 3 or worry that a misplaced asterisk will cause an inadvertent mail bomb. While a basic configuration is easy to read and can be created quickly, Exim s syntax and behaviour does get more subtle as you enter complicated areas like virtual hosting, filtering, and automatic replies. With this comprehensive survey, you can find basic information in a hurry as well as thorough coverage of more advanced material. The author of this text, Philip Hazel, is the creator of Exim. He writes its online documentation, answers many questions on the Exim mailing list each week, and frequently adds new features in response to user requests. Codice libro della libreria AAC9780596000981

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Philip Hazel
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ISBN 10: 0596000987 ISBN 13: 9780596000981
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Descrizione libro O Reilly Media, Inc, USA, United States, 2001. Book. Condizione libro: New. 232 x 174 mm. Language: English . Brand New Book. Exim delivers electronic mail, both local and remote. It has all the virtues of a good postman: it s easy to talk to, reliable, efficient, and eager to accommodate even the most complex special requests. It serves as the default mail transport agent installed on some Linux systems, runs on many versions of Unix, and is suitable for any TCP/IP network with any combination of hosts and end-user mail software. Exim is growing in popularity because it is open source, scalable, and rich in features: compatibility with the calling interfaces and options of sendmail (for which Exim is usually a drop-in replacement); lookups in LDAP servers, MySQL and PostgreSQL databases, and NIS or NIS+ services; support for many kinds of address parsing, including regular expressions that are compatible with Perl 5; sophisticated error handling; and innumerable tuning parameters for improving performance and handling enormous volumes of mail; Exim is easy to configure. You never have to deal with ruleset 3 or worry that a misplaced asterisk will cause an inadvertent mail bomb. While a basic configuration is easy to read and can be created quickly, Exim s syntax and behaviour does get more subtle as you enter complicated areas like virtual hosting, filtering, and automatic replies. With this comprehensive survey, you can find basic information in a hurry as well as thorough coverage of more advanced material. The author of this text, Philip Hazel, is the creator of Exim. He writes its online documentation, answers many questions on the Exim mailing list each week, and frequently adds new features in response to user requests. Codice libro della libreria AAC9780596000981

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