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Telnet
POP3 ...
POP3
Check Port 110 with the Telnet Command
You can check your POP3 Server on port 110 with the
following Telnet command:
Open a command line and type
telnet
pop3-server.domain.com 110
If your server is online a connection will be established on port
110 (POP3). An Exchange Server answers with the following output:
+OK
Microsoft Exchange 2000 POP3 server version 6.0.6249.0
(exchange.domain.com) ready.
Use the following commands for authentication and listing the
messages:
USER
Domain/Windows-NT-Account/Exchange-Mailbox
OK
PASS <password>
+OK User successfully logged on.
LIST
1 6855
2 1483
3 1056
4 1841
5 2037
A list of messages is
displayed. If you would like to read message number 2, use the
following command:
RETR
2
+OK
Received: by
exchange.domain.com
id <01C44FA6.6E523331@exchange.domain.com>; Fri, 11 Jun 2004
13:22:50 +0200
Content-Class: urn:content-classes:message
MIME-Version: 1.0
Content-Type: text/html;
charset="us-ascii"
Content-Transfer-Encoding: quoted-printable
Subject: Test-Message
X-MimeOLE: Produced By Microsoft Exchange V6.0.6375.0
Date: Fri, 11 Jun 2004 13:22:50 +0200
Message-ID:
<8440D3CEE802234F9C2F1AA01BE6D26C012B59C2@exchange.domain.com>
X-MS-Has-Attach:
X-MS-TNEF-Correlator:
Thread-Topic: Test-Message
Thread-Index: AcRPpm5PwHwq3LOMRY2RBQeho6HObw==
From: "User1" <user1@domain.com>
To: "User2" <user2@domain.com>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 3.2//EN">
<HTML>
<HEAD>
<META HTTP-EQUIV=3D"Content-Type"
CONTENT=3D"text/html; = charset=3DUS-ASCII">
<META NAME=3D"Generator" CONTENT=3D"MS Exchange
Server version = 6.0.6389.0">
<TITLE>Test-Message </TITLE>
</HEAD>
<BODY>
<!-- Converted from text/rtf format -->
<P><FONT SIZE=3D2 FACE=3D"Arial">Test-Message
</FONT>
</P>
</BODY>
</HTML>
.
The
better way to Check Port 110
If you would like to check your POP3 Server at regular
intervals, you can use the command line utility SLCheck.
SLCheck connects to the POP3 Server and checks the answer. Batch
files can be executed in dependance of the result, e.g. to send
alarm notifications. Try the following command:
SLCheck
-p 110 -a pop3.domain.com -r "+OK"
+OK
is the normal answer from a POP3 Server.
All results are logged in a logfile. You can monitor your POP3
Server by running SLCheck as a scheduled task, e.g. once a minute.
SLCheck Homepage
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