Contents

Введение…………………………………………………………………….……………..3

1 Organization and functioning of e-mail networks ......... ... ............ ..6

1.1 Characteristics of mailers .. ............................ .................. 10

1.2 e-mail message ... ................................................ ........ 13

1.3 Using e-mail ................................................ ..14

2 Fundamentals of e-mail ........................... .. ..................... .18

2.1 The use of addresses in the e-mail system ........................ ..18

2.2 The structure of the e-mail address ................................. ... ............ 18

2.3 Sending E-mail to other networks ................... ............ .. ... ....... 26

2.4 The meaning and function of network resources on the basis of WEB-technologies ............ ... 26

3 Minutes of the transmit and receive e-mail .. ...................... ............ 30

3.1 Simple Mail Transfer Protocol SMTP .. ......... .. ... ... ............... .. ......... 30

3.1.1 Team e-mail protocol SMTP ................................. ..31

3.1.2 Intermediate agents .............................................. ... .. ............ ... 38

3.2 The expansion of e-mail protocol SMTP ......................... ...... ..41

3.3 protocol to send e-mail POP .. .... ................... ............... 46

Conclusion ...................................................... .. ............ .. ..................... 50

Глоссарий…………………………………………….………..………….……...............51

List of sources used ............................ ....... ...... .. .... ............ .55

List сокращений…………………………………..…………..……..……………….57

Appendix A ................................................ .. .......... ......... .. ............... .58

Appendix B ....................................................................................... 59

Appendix ....................................................................................... 60