![2009亞.
1. 丶亠仍 舒弍仂: 仂仍亳 仗舒从亳亠从亳亠 仆舒于从亳 于 亳仗仂仍亰仂于舒仆亳亳 仗仂仂从仂仍仂于
SMTP (Simple Mail Transfer Protocol) 亳 POP (Post Office Protocol) 亟仍
仗亠亠亟舒亳 亳 仂弍舒弍仂从亳 仍亠从仂仆仆 仂仂弍亠仆亳亶.
2. 舒亟舒仆亳亠 仆舒 仍舒弍仂舒仂仆 舒弍仂:
仂亟亞仂仂于亳 仗亳仄亠 仗仂仂于 舒仆亰舒从亳亶 亟仍 仂仗舒于从亳 仗仂仂于仂亞仂
仂仂弍亠仆亳 仗仂 仗仂仂从仂仍 SMTP 亳 仗亳亠仄舒 仗仂仂于仂亞仂 仂仂弍亠仆亳 仗仂 仗仂仂从仂仍
POP3.
仗舒于亳 仗仂仂于仂亠 仂仂弍亠仆亳亠 仗仂 仗仂仂从仂仍 SMTP 仗仂仄仂
亟舒仍亠仆仆仂亞仂 亟仂仗舒 telnet (SMTP-亠于亠 pds.sut.ru, 仗仂 25).
弌 仗仂仄仂 -舒仆亰舒从亳亳 (仗仂 110 舒亠亞仂 仗仂仂于仂亞仂 亠于亠舒)
于于亠亳 仗亳仂从 仗仂仂于 仂仂弍亠仆亳亶. 仂仍亳 仗仂仍仆亶 亠从 仂亟仆仂亞仂 亳亰
仗仂仂于 仂仂弍亠仆亳亶 (仆舒 于弍仂).
仗舒于亳 仗仂仂于仂亠 仂仂弍亠仆亳亠 仗仂 仗仂仂从仂仍 SMTP 仂
仆亠亠于ﾑ亠亞仂 仗仂仍亰仂于舒亠仍. 丕弍亠亟亳, 仂 舒从舒 舒仍从舒 弍仍仂从亳亠
仗仂仂于仂亶 仍亢弍仂亶 亠于亠舒 仗仂仍舒亠仍.
3. 仗仂仍仆亠仆亳亠 舒弍仂:
SMTP-舒仆亰舒从亳亳
student@521-14:~$ telnet 172.16.100.20 25 仗仂亟从仍ﾑ舒亠仄 从 SMTP-亠于亠
Trying 172.16.100.20...
Connected to 172.16.100.20.
Escape character is '^]'.
220 opds ESMTP Postfix (Debian/GNU)
helo student05 仗亠亟舒于仍磳仄 从舒从 student05
250 opds
mail from student05@opds.net
501 5.5.4 Syntax: MAIL FROM:<address>
mail from: student05@opds.net - 舒亟亠 仂仗舒于亳亠仍
250 2.1.0 Ok
rcpt to: student03@opds.net 舒亟亠 仗仂仍舒亠仍
250 2.1.5 Ok
data 仆舒舒仍仂 亠仍舒 仂仂弍亠仆亳
354 End data with <CR><LF>.<CR><LF>
hello!!!! 亠从 仗亳仄舒
. 亰仆舒从 从仆舒仆亳 亠从舒 仗亳仄舒
250 2.0.0 Ok: queued as DEEBEC6F4
POP-舒仆亰舒从亳亳
student@521-14:~$ telnet 172.16.100.20 110 仂亠亟亳仆磳仄 POP-亠于亠仂仄
Trying 172.16.100.20...
Connected to 172.16.100.20.
Escape character is '^]'.
+OK Hello there.
user student03 于于仂亟亳仄 仍仂亞亳仆
+OK Password required.
pass 12345 于于仂亟亳仄 仗舒仂仍
2](https://image.slidesharecdn.com/maillinuxprim-121010080243-phpapp02/85/Mail-linux-prim-2-320.jpg)
![+OK logged in.
stat 仗仂仄舒亳于舒亠仄 仂弍亠亠 亳仍仂 仂仂弍亠仆亳亶 亳 亳 仂弍亳亶 仂弍亠仄
+OK 6 3005
retr 6 仗仂仄舒亳于舒亠仄 仂亟亠亢亳仄仂亠 仂仂弍亠仆亳 6
+OK 424 octets follow.
Return-Path: <student05@opds.net>
X-Original-To: student03@opds.net
Delivered-To: student03@opds.net
Received: from student05 (unknown [172.16.100.34])
by opds (Postfix) with SMTP id DEEBEC6F4
for <student03@opds.net>; Fri, 2 Oct 2009 12:38:44 +0400 (MSD)
Message-Id: <20091002083937.DEEBEC6F4@opds>
Date: Fri, 2 Oct 2009 12:38:44 +0400 (MSD)
From: student05@opds.net
To: undisclosed-recipients:;
hello!!!!
.
dele
-ERR Invalid message number.
dele 6 仗仂仄亠舒亠仄 6-仂亠 仂仂弍亠仆亳亠 仆舒 亟舒仍亠仆亳亠
+OK Deleted.
stat 仗仂仄舒亳于舒亠仄 仂弍亠亠 亳仍仂 仂仂弍亠仆亳亶 (亳 舒仍仂 仆舒 仂亟仆仂 仄亠仆亠)
+OK 5 2581
list 5 仄仂亳仄 仂弍亠仄 5-亞仂 仂仂弍亠仆亳
+OK 5 446
rset 于仂舒仆仂于仍亠仆亳亠 仂仂弍亠仆亳, 仗仂仄亠亠仆仆仂亞仂 仆舒 亟舒仍亠仆亳亠
+OK Resurrected.
stat - 仗仂仄舒亳于舒亠仄 仂弍亠亠 亳仍仂 仂仂弍亠仆亳亶 (亳 舒仍仂 仆仂于舒 6)
+OK 6 3005
dele 6 仆仂于舒 仗仂仄亠舒亠仄 6-仂亠 仂仂弍亠仆亳亠 仆舒 亟舒仍亠仆亳亠
+OK Deleted.
quit 亰舒于亠舒亠仄 亠舒仆
+OK Bye-bye.
Connection closed by foreign host.
student@521-14:~$ telnet 172.16.100.20 110 仂亠亟亳仆磳仄 POP-亠于亠仂仄
Trying 172.16.100.20...
Connected to 172.16.100.20.
Escape character is '^]'.
+OK Hello there.
user student03 于于仂亟亳仄 仍仂亞亳仆
+OK Password required.
pass 12345 于于仂亟亳仄 仗舒仂仍
+OK logged in.
stat 仗仂仄舒亳于舒亠仄 仂弍亠亠 亳仍仂 仂仂弍亠仆亳亶 (亳 亳仍仂 舒仍仂 舒于仆仄 5)
+OK 5 2581
rset 仗舒亠仄 于亠仆 亟舒仍亠仆仆仂亠 仗亳仄仂
+OK Resurrected.
stat - 弍亠亰仗亠仆仂
+OK 5 2581
仗舒于从舒 仗仂仂于仂亞仂 仂仂弍亠仆亳 仗仂 仗仂仂从仂仍 SMTP 仂 仆亠亠于ﾑ亠亞仂
仗仂仍亰仂于舒亠仍.
student@521-14:~$ telnet 172.16.100.20 25
Trying 172.16.100.20...
Connected to 172.16.100.20.
Escape character is '^]'.
3](https://image.slidesharecdn.com/maillinuxprim-121010080243-phpapp02/85/Mail-linux-prim-3-320.jpg)
![220 opds ESMTP Postfix (Debian/GNU)
helo olga
250 opds
mail from: olga@opds.net 从舒亰于舒亠仄 仆亠亠于ﾑ亠亞仂 仗仂仍亰仂于舒亠仍
250 2.1.0 Ok
rcpt to: student03@opds.net
250 2.1.5 Ok
data
354 End data with <CR><LF>.<CR><LF>
my little cat
.
250 2.0.0 Ok: queued as 18BD3C695
quit
221 2.0.0 Bye
Connection closed by foreign host.
student@521-14:~$ telnet 172.16.100.20 110
Trying 172.16.100.20...
Connected to 172.16.100.20.
Escape character is '^]'.
+OK Hello there.
user student03
+OK Password required.
pass 12345
+OK logged in.
stat
+OK 6 2994
retr 6
+OK 413 octets follow.
Return-Path: <olga@opds.net>
X-Original-To: student03@opds.net
Delivered-To: student03@opds.net
Received: from olga (unknown [172.16.100.34])
by opds (Postfix) with SMTP id 18BD3C695
for <student03@opds.net>; Fri, 2 Oct 2009 12:56:02 +0400 (MSD)
Message-Id: <20091002085642.18BD3C695@opds>
Date: Fri, 2 Oct 2009 12:56:02 +0400 (MSD)
From: olga@opds.net
To: undisclosed-recipients:;
my little cat 仗亳仄仂 弍仍仂 仗亠仆仂 仂仗舒于仍亠仆仂 亳 仗仂仍亠仆仂!
4](https://image.slidesharecdn.com/maillinuxprim-121010080243-phpapp02/85/Mail-linux-prim-4-320.jpg)
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- 2. 2009亞. 1. 丶亠仍 舒弍仂: 仂仍亳 仗舒从亳亠从亳亠 仆舒于从亳 于 亳仗仂仍亰仂于舒仆亳亳 仗仂仂从仂仍仂于 SMTP (Simple Mail Transfer Protocol) 亳 POP (Post Office Protocol) 亟仍 仗亠亠亟舒亳 亳 仂弍舒弍仂从亳 仍亠从仂仆仆 仂仂弍亠仆亳亶. 2. 舒亟舒仆亳亠 仆舒 仍舒弍仂舒仂仆 舒弍仂: 仂亟亞仂仂于亳 仗亳仄亠 仗仂仂于 舒仆亰舒从亳亶 亟仍 仂仗舒于从亳 仗仂仂于仂亞仂 仂仂弍亠仆亳 仗仂 仗仂仂从仂仍 SMTP 亳 仗亳亠仄舒 仗仂仂于仂亞仂 仂仂弍亠仆亳 仗仂 仗仂仂从仂仍 POP3. 仗舒于亳 仗仂仂于仂亠 仂仂弍亠仆亳亠 仗仂 仗仂仂从仂仍 SMTP 仗仂仄仂 亟舒仍亠仆仆仂亞仂 亟仂仗舒 telnet (SMTP-亠于亠 pds.sut.ru, 仗仂 25). 弌 仗仂仄仂 -舒仆亰舒从亳亳 (仗仂 110 舒亠亞仂 仗仂仂于仂亞仂 亠于亠舒) 于于亠亳 仗亳仂从 仗仂仂于 仂仂弍亠仆亳亶. 仂仍亳 仗仂仍仆亶 亠从 仂亟仆仂亞仂 亳亰 仗仂仂于 仂仂弍亠仆亳亶 (仆舒 于弍仂). 仗舒于亳 仗仂仂于仂亠 仂仂弍亠仆亳亠 仗仂 仗仂仂从仂仍 SMTP 仂 仆亠亠于ﾑ亠亞仂 仗仂仍亰仂于舒亠仍. 丕弍亠亟亳, 仂 舒从舒 舒仍从舒 弍仍仂从亳亠 仗仂仂于仂亶 仍亢弍仂亶 亠于亠舒 仗仂仍舒亠仍. 3. 仗仂仍仆亠仆亳亠 舒弍仂: SMTP-舒仆亰舒从亳亳 student@521-14:~$ telnet 172.16.100.20 25 仗仂亟从仍ﾑ舒亠仄 从 SMTP-亠于亠 Trying 172.16.100.20... Connected to 172.16.100.20. Escape character is '^]'. 220 opds ESMTP Postfix (Debian/GNU) helo student05 仗亠亟舒于仍磳仄 从舒从 student05 250 opds mail from student05@opds.net 501 5.5.4 Syntax: MAIL FROM:<address> mail from: student05@opds.net - 舒亟亠 仂仗舒于亳亠仍 250 2.1.0 Ok rcpt to: student03@opds.net 舒亟亠 仗仂仍舒亠仍 250 2.1.5 Ok data 仆舒舒仍仂 亠仍舒 仂仂弍亠仆亳 354 End data with <CR><LF>.<CR><LF> hello!!!! 亠从 仗亳仄舒 . 亰仆舒从 从仆舒仆亳 亠从舒 仗亳仄舒 250 2.0.0 Ok: queued as DEEBEC6F4 POP-舒仆亰舒从亳亳 student@521-14:~$ telnet 172.16.100.20 110 仂亠亟亳仆磳仄 POP-亠于亠仂仄 Trying 172.16.100.20... Connected to 172.16.100.20. Escape character is '^]'. +OK Hello there. user student03 于于仂亟亳仄 仍仂亞亳仆 +OK Password required. pass 12345 于于仂亟亳仄 仗舒仂仍 2
- 3. +OK logged in. stat 仗仂仄舒亳于舒亠仄 仂弍亠亠 亳仍仂 仂仂弍亠仆亳亶 亳 亳 仂弍亳亶 仂弍亠仄 +OK 6 3005 retr 6 仗仂仄舒亳于舒亠仄 仂亟亠亢亳仄仂亠 仂仂弍亠仆亳 6 +OK 424 octets follow. Return-Path: <student05@opds.net> X-Original-To: student03@opds.net Delivered-To: student03@opds.net Received: from student05 (unknown [172.16.100.34]) by opds (Postfix) with SMTP id DEEBEC6F4 for <student03@opds.net>; Fri, 2 Oct 2009 12:38:44 +0400 (MSD) Message-Id: <20091002083937.DEEBEC6F4@opds> Date: Fri, 2 Oct 2009 12:38:44 +0400 (MSD) From: student05@opds.net To: undisclosed-recipients:; hello!!!! . dele -ERR Invalid message number. dele 6 仗仂仄亠舒亠仄 6-仂亠 仂仂弍亠仆亳亠 仆舒 亟舒仍亠仆亳亠 +OK Deleted. stat 仗仂仄舒亳于舒亠仄 仂弍亠亠 亳仍仂 仂仂弍亠仆亳亶 (亳 舒仍仂 仆舒 仂亟仆仂 仄亠仆亠) +OK 5 2581 list 5 仄仂亳仄 仂弍亠仄 5-亞仂 仂仂弍亠仆亳 +OK 5 446 rset 于仂舒仆仂于仍亠仆亳亠 仂仂弍亠仆亳, 仗仂仄亠亠仆仆仂亞仂 仆舒 亟舒仍亠仆亳亠 +OK Resurrected. stat - 仗仂仄舒亳于舒亠仄 仂弍亠亠 亳仍仂 仂仂弍亠仆亳亶 (亳 舒仍仂 仆仂于舒 6) +OK 6 3005 dele 6 仆仂于舒 仗仂仄亠舒亠仄 6-仂亠 仂仂弍亠仆亳亠 仆舒 亟舒仍亠仆亳亠 +OK Deleted. quit 亰舒于亠舒亠仄 亠舒仆 +OK Bye-bye. Connection closed by foreign host. student@521-14:~$ telnet 172.16.100.20 110 仂亠亟亳仆磳仄 POP-亠于亠仂仄 Trying 172.16.100.20... Connected to 172.16.100.20. Escape character is '^]'. +OK Hello there. user student03 于于仂亟亳仄 仍仂亞亳仆 +OK Password required. pass 12345 于于仂亟亳仄 仗舒仂仍 +OK logged in. stat 仗仂仄舒亳于舒亠仄 仂弍亠亠 亳仍仂 仂仂弍亠仆亳亶 (亳 亳仍仂 舒仍仂 舒于仆仄 5) +OK 5 2581 rset 仗舒亠仄 于亠仆 亟舒仍亠仆仆仂亠 仗亳仄仂 +OK Resurrected. stat - 弍亠亰仗亠仆仂 +OK 5 2581 仗舒于从舒 仗仂仂于仂亞仂 仂仂弍亠仆亳 仗仂 仗仂仂从仂仍 SMTP 仂 仆亠亠于ﾑ亠亞仂 仗仂仍亰仂于舒亠仍. student@521-14:~$ telnet 172.16.100.20 25 Trying 172.16.100.20... Connected to 172.16.100.20. Escape character is '^]'. 3
- 4. 220 opds ESMTP Postfix (Debian/GNU) helo olga 250 opds mail from: olga@opds.net 从舒亰于舒亠仄 仆亠亠于ﾑ亠亞仂 仗仂仍亰仂于舒亠仍 250 2.1.0 Ok rcpt to: student03@opds.net 250 2.1.5 Ok data 354 End data with <CR><LF>.<CR><LF> my little cat . 250 2.0.0 Ok: queued as 18BD3C695 quit 221 2.0.0 Bye Connection closed by foreign host. student@521-14:~$ telnet 172.16.100.20 110 Trying 172.16.100.20... Connected to 172.16.100.20. Escape character is '^]'. +OK Hello there. user student03 +OK Password required. pass 12345 +OK logged in. stat +OK 6 2994 retr 6 +OK 413 octets follow. Return-Path: <olga@opds.net> X-Original-To: student03@opds.net Delivered-To: student03@opds.net Received: from olga (unknown [172.16.100.34]) by opds (Postfix) with SMTP id 18BD3C695 for <student03@opds.net>; Fri, 2 Oct 2009 12:56:02 +0400 (MSD) Message-Id: <20091002085642.18BD3C695@opds> Date: Fri, 2 Oct 2009 12:56:02 +0400 (MSD) From: olga@opds.net To: undisclosed-recipients:; my little cat 仗亳仄仂 弍仍仂 仗亠仆仂 仂仗舒于仍亠仆仂 亳 仗仂仍亠仆仂! 4