POP3: Difference between revisions

From Ilianko
Created page with "https://unix.stackexchange.com/questions/201818/checking-pop-mail-account-using-terminal Свързване към pop3 $ <code><pre> telnet pop.gmx.net 110 Trying 212.227.1..."
 
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https://unix.stackexchange.com/questions/201818/checking-pop-mail-account-using-terminal
https://unix.stackexchange.com/questions/201818/checking-pop-mail-account-using-terminal


Свързване към pop3
Свързване към pop3 през текстов терминал:
$
*telnet (за тест/вкраен случай, за връзка към localhost ресурс или към сървър във вътрешната мрежа, паролата се предава не криптирана)
<code><pre>
<code><pre>
telnet pop.gmx.net 110
telnet localhost 110
Trying 212.227.17.185...
Trying ::1...
Connected to pop.gmx.net.
Connected to localhost.
Escape character is '^]'.
Escape character is '^]'.
+OK POP server ready H migmx028 0MAbjW-1YwF4D0ml8-00BiVl
+OK Dovecot (Debian) ready.
USER spamaccount80@gmx.de
USER info@example.com
+OK password required for user "spamaccount80@gmx.de"
+OK password required for user "info@example.com"
PASS typeyourpassword
PASS password
-ERR Error retrieving your GMX emails. Your connection is not encrypted. Enable SSL in your mail program. Instructions: https://ssl.gmx.net
+OK Logged in.
LIST 
+OK 1 messages:
1 1007
RETR 1
+OK 1007 octets
Return-Path: <info@example.com>
Delivered-To: info@example.com
Received: from localhost (localhost [127.0.0.1])
by example.com (Postfix) with ESMTP id 421B1C04D5
...
Welcome to your new email account. Your webmaster.
.
DELE 1
+OK Marked to be deleted.
QUIT
+OK Logging out, messages deleted.
Connection closed by foreign host.
Connection closed by foreign host.
</pre></code>


Well, this failed because most mail server require a SSL/TLS encrypted session nowadays. So instead of using telnet you can use socat:
*socat използване на криптирана връзка ...
 
<code><pre>
$ socat - OPENSSL:pop.gmx.net:995
socat - openssl:example.com:995
+OK POP server ready H migmx113 0MC062-1Yzese0KO7-00AVNE
+OK Dovecot (Debian) ready.
USER spamaccount80@gmx.de
...
+OK password required for user "spamaccount80@gmx.de"
</pre></code>
PASS typeyourpassword
+OK mailbox "spamaccount80@gmx.de" has 13518 messages (191718918 octets) H migmx113
 
If you type a wrong password, the server will probably say something like:
 
-ERR authentication failed
 
Or instead of socat you probably have openssl laying around:
 
$ openssl s_client -quiet -connect pop.gmx.net:995
depth=2 C = DE, O = Deutsche Telekom AG, OU = T-TeleSec Trust Center, CN = Deutsche Telekom Root CA 2
verify error:num=19:self signed certificate in certificate chain
verify return:0
+OK POP server ready H migmx108 0MWpjO-1YiwnK3ZfP-00XoK


*openssl :
<code><pre>
openssl s_client -quiet -connect example.com:995
depth=2 O = Digital Signature Trust Co., CN = DST Root CA X3
verify return:1
depth=1 C = US, O = Let's Encrypt, CN = R3
verify return:1
depth=0 CN = erazum.com
verify return:1
+OK Dovecot (Debian) ready.
...
</pre></code>
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Latest revision as of 12:25, 26 February 2021

https://unix.stackexchange.com/questions/201818/checking-pop-mail-account-using-terminal

Свързване към pop3 през текстов терминал:

  • telnet (за тест/вкраен случай, за връзка към localhost ресурс или към сървър във вътрешната мрежа, паролата се предава не криптирана)
telnet localhost 110
Trying ::1...
Connected to localhost.
Escape character is '^]'.
+OK Dovecot (Debian) ready.
USER info@example.com
+OK password required for user "info@example.com"
PASS password
+OK Logged in.
LIST   
+OK 1 messages:
1 1007
RETR 1
+OK 1007 octets
Return-Path: <info@example.com>
Delivered-To: info@example.com
Received: from localhost (localhost [127.0.0.1])
	by example.com (Postfix) with ESMTP id 421B1C04D5
...
Welcome to your new email account. Your webmaster.
.
DELE 1
+OK Marked to be deleted.
QUIT
+OK Logging out, messages deleted.
Connection closed by foreign host.
  • socat използване на криптирана връзка ...
socat - openssl:example.com:995
+OK Dovecot (Debian) ready.
...
  • openssl :
openssl s_client -quiet -connect example.com:995
depth=2 O = Digital Signature Trust Co., CN = DST Root CA X3
verify return:1
depth=1 C = US, O = Let's Encrypt, CN = R3
verify return:1
depth=0 CN = erazum.com
verify return:1
+OK Dovecot (Debian) ready.
...

Share Edit Follow edited May 7 '15 at 6:16 answered May 6 '15 at 19:28 FloHimself 9,18733 gold badges1515 silver badges2323 bronze badges 

   Might be worth including the command line for plain ol' POP3 without SSL – roaima May 6 '15 at 22:44
   1
   @roaima Good remark. I've added telnet and openssl examples. – FloHimself May 7 '15 at 6:12

Add a comment 6

If you want to check your pop3 mail accounts then take a look at the following terminal mail clients: 

   pine
   alpine
   mutt
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