wendmail：英文PDF电子书下载

I: A Tutorial 1

1: Introduction 3

1.1 MUA Versus MTA 4

1.2 Why Is sendmail So Complex? 4

1.3 Three Important Parts 5

1.4 Run sendmail by Hand 6

1.5 The Header 8

1.6 The Body 8

1.7 The Envelope 9

1.8 Things to Try 10

2: Hava a V8 13

2.1 Get the Source 13

2.2 Read the Documents 14

2.3 What s What in src 15

上卷 15

Perface 15

2.4 Preliminaries 16

2.5 Build 19

2.6 Test It 20

2.7 Things to Try 21

3: The Roles of sendmail 23

3.1 Role in the Filesystem 23

3.2 Role in Local Delivery 27

3.3 Role in Network Transport 29

3.4 Role as a Daemon 30

3.5 Thins to Try 31

4: How to Run sendmail 33

4.1 Become a Mode(-b) 34

4.2 Verbose(-v) 39

4.3 Debugging(-d) 43

4.4 Things to Try 44

5: The sendmail.cf File 47

5.1 Overview 47

5.2 The Minimal File 49

5.3 A Quick Tour 50

5.4 Things to Try 55

6: The Mail Hub and Delivery Agents 57

6.2 Define a Mail Delivery Agent 59

6.1 The client.cf File 59

6.3 The Local Delivery Agent 61

6.4 Add the Missing Parts to Mhub 66

6.5 Things to Try 67

7: Macros 69

7.1 Overview 69

7.2 Defining Macros 71

7.3 Predefined Macros 72

7.4 Things to Try 75

8.1 A Fictional Network 77

8: Addresses and Rules 77

8.2 Why Rules? 81

8.3 Rule Sets 83

8.4 Rules 85

8.5 The Workspace 86

8.6 The Flow of Addresses Through Rules 87

8.7 Wildcard Operators 89

8.8 Things to Try 94

9: Rule Set O 95

9.1 Introducing Rule Set O 96

9.2 The RHS Triple 96

9.3 Testing Rule Set O 99

9.4 The error Delivery Agent 100

9.5 Things to Try 101

10: Rule Set 3 103

10.1 Why Preprocess? 104

10.2 Rule Set 3 105

10.3 Missing Addresses 108

10.4 Nested Angle Brackets 109

10.5 Details of Rule Flow 111

10.6 Things to Try 113

11: Rule Sets 1 and S= 115

11.1 Flow of the Sender s Address 115

11.2 Rule Set S= 116

11.3 All Mail from the Hub 117

11.4 Rule Set Hubset 117

11.5 Testing So Far 120

11.6 Handling user？thishost 121

11.7 Rule Set 1 123

11.8 Things to Try 124

12: Class 127

12.1 The Class Command 128

12.2 The File Form of Class 135

12.3 Things to Try 138

13: Setting Options 139

13.1 Options: An Overview 139

13.2 Required Options 140

13.3 Testing the Options 146

13.4 Sending Mail 147

13.5 Things to Try 148

14: Headers,Precedence,and Trust 149

14.1 Headers 149

14.2 Headers Versus Delivery Agent Flags 153

14.3 Headers Learned So Far 155

14.4 Precedence 156

14.5 Sending Real Mail 157

14.6 Trusted User 158

14.7 Things to Try 159

15: Install and Test the client,cf File 161

15.1 Test the Configuration File 161

15.2 The Real Queue Directory 163

15.3 MX Records 164

15.4 Hub Accepts Mail for Client 166

15.5 Prevent the Daemon from Running 169

15.6 Install the client.cf File 170

15.7 Things to Try 171

16: The null,mc File and m4 173

16.1 The cf/cf Directory 173

16.2 The null.mc File 174

16.3 Run m4 175

16.4 Test the Result 176

16.5 Qualify All Addresses? 177

16.6 Things to Try 178

17: The Hub s Complex Rules 179

17.1 Rule Set 3 180

17.2 Rule Set 96 185

17.3 Rule Set 0 187

17.4 Rule Set 4 188

17.5 Things to Try 189

II: Build and Install 191

18: Compile and Install sendmail 193

18.1 To Use or Not to Use 193

18.2 Vendor Versus Compiling 194

18.3 Obtain the Source 195

18.4 Tuning Makefile 198

18.5 Run Make 203

18.6 Install sendmail 204

18.7 Pitfalls 205

18.8 Alphabetized Reference 206

19: V8 m4 Configuration 241

19.1 The m4 Preprocessor 241

19.2 Build with m4 244

19.3 The Minimal mc File 246

19.4 m4 Macros by Function 251

19.6 Alphabetized m4 Macros 256

19.5 Pitfalls 256

20:The Checkcompat O Cookbook 285

20.1 How checkcompat O Works 286

20.2 The Cookbook 288

20.3 Alphabetized V8.8 Subroutines 297

III: Administration 303

21: DNS and sendmail 305

21.1 Overview 305

21.2 How sendmail Uses DNS 309

21.3 Set Up MX Records 314

21.4 How to Use nslookup 320

21.5 Prepare for Disaster 322

21.6 Pitfalls 326

22:Security 327

22.1 Why root? 327

22.2 The Environment 329

22.3 SMTP Probes 330

22.4 The Configuration File 333

22.5 Permissions 338

22.6 The Aliases File 343

22.7 Forged Mail 344

22.8 Security Features 347

22.9 Pitfalls 355

23: The Queue 357

23.1 Overview of the Queue 358

23.2 Parts of a Queued Message 359

23.3 A Bogus qf File (V8 only):Qf 364

23.4 Printing the Queue 366

23.5 How the Queue Is Processed 369

23.6 Cause the Queue to Be Processed 371

23.7 Process Alternate Queue 376

23.8 Pitfalls 378

23.9 The qf File Internals 379

24:Aliases 393

24.1 The aliases(5)File 393

24.2 Forms of Alias Delivery 397

24.3 Write a Delivery Agent Script 402

24.4 Special Aliases 404

24.5 The Aliases Database 408

24.6 Prevent Aliasing with-n 411

24.7 Pitfalls 413

25: Mailing Lists and～/.forward 415

25.1 Internal Mailing Lists 415

25.2 :include:Mailing Lists 416

25.3 Defining a Mailing List Owner 420

25.4 Exploder Mailing Lists 421

25.5 Problems with Mailing Lists 422

25.6 Packages That Help 425

25.7 The User s～/.forward File 426

25.8 Pitfalls 432

26: Logging and Statistics 435

26.1 Logging with syslog 435

26.2 Statistics 446

26.3 Signaling the Daemon 449

26.4 Log Transactions with-X 453

26.5 Pitfalls 454

IV：Reference 457

下卷 457

27：Tbe Configuration File 459

27.1 Overall Syntax 460

27.2 Comments 461

27.3 V8 Comments 461

27.4 Continuation Lines 462

27.5 The V Configuration Command 462

27.6 Pitfalls 464

28.1 Overview 465

28: Rules 465

28.2 Tokenizing Rules 469

28.3 The Workspace 472

28.4 The Behavior of a Rule 472

28.5 The LHS 473

28.6 The RHS 475

28.7 Pitfalls 486

29:Rule Sets 487

29.1 The S Configuration Command 487

29.2 Rule Sets and m4 492

29.3 The Sequence of Rule Sets 494

29.4 Rule Set 3 496

29.5 Rule Set 4 500

29.6 Rule Set 0 501

29.7 Rule Set 5 505

29.8 Rule Set 2 506

29.9 Rule Set 1 507

29.10 The check-…Rule Sets 507

29.11 Pitfalls 513

30: Delivery Agents 515

30.1 Configuration File Syntax 515

30.2 The Symbolic Name 516

30.3 m4 Configuration Syntax 517

30.4 The Equates 519

30.5 Internally Defined Names 538

30.6 How Executed 542

30.7 Pitfalls 544

30.8 Alphabetized F= Flags 545

31: Defined Macros 569

31.1 Preassigned Macros 570

31.2 Command-Line Definitions 570

31.3 Configuration File Definitons 572

31.4 Macro Names 574

31.5 Macro Expansion: $ and $ 576

31.6 Macro Conditionals: ?,$|,and $ 580

31.7 Categories of Macros 581

31.8 Macros with the m4 Technique 582

31.9 Pitfalls 583

31.10 Alpahabetized Reference 584

32: Class Macros 609

32.1 Class Configuration Commands 609

32.2 Access Class in Rules 613

32.3 Class with m4 617

32.4 Pitfalls 618

32.5 Alphabetized Reference 619

33: Database Macros 625

33.1 Enable at Compile Time 626

33.2 Create Files with makemap 627

33.3 The K Configuration Command 630

33.4 Use Maps with $(and $)in Rules 638

33.5 The User Database 642

33.6 Database Maps and m4 645

33.7 Pitfalls 646

33.8 Alphabetized Reference 647

34: Options 663

34.1 Command-Line Options 664

34.2 Configuration-File Options 667

34.3 Configuring with V8 m4 Options 668

34.4 Alphabetical Table of All Options 671

34.5 Option Argument Types 673

34.6 Interrelating Options 676

34.7 Pitfalls 679

34.8 Alphabetized Reference 680

35: Headers 773

35.1 The H Configuration Command 773

35.2 Header Names 775

35.3 Header Field Contents 776

35.4 ?flags? in Header Definitions 780

35.5 Header Behavior in conf.c 781

35.6 Headers by Category 784

35.7 Forwarding with Resent-Headers 788

35.8 Precedence 790

35.9 Pitfalls 791

35.10 Alphabetized Reference 792

36.1 Alternative argv[0]Names 811

36: The Command Line 811

36.2 Command-Line Switches 815

36.3 List of Recipient Addresses 817

36.4 Processing the Command Line 817

36.5 sendmail s exitO Status 819

36.6 Pitfalls 827

36.7 Alphabetized Reference 828

37: Debugging With-d 845

37.1 The Syntax of-d 845

37.3 Interpreting the Output 847

37.2 Debugging Behavior 847

37.4 Pitfalls 850

37.5 Reference in Numerical Order 850

38: Rule-Set Testing with-bt 949

38.1 Overview 949

38.2 Configuration Lines 951

38.3 Dump a Macro 953

38.4 Show an Item 955

38.5 Complex Actions Made Simple 957

38.6 Process-Specified Addresses 966

38.7 Add Debugging for Detail 970

38.8 Batch Rule-Set Testing 971

38.9 Pitfalls 972

V: Appendixes 973

A: The client.cf File 975

B: Host Status File Internals 977

C: The Berkeley DB Database 981

D: Sun Enbancements 985

Bibliography 991

Index 997