Knowledgebase: General Information
Connection refuse when send an email message
Posted by on 16 November 2012 03:09 AM

This tutorial will give you a basic verification and troubleshooting when your connection is refusing STMP relays. It is advice to check this error using a telnet connection for this to isolate the concern.

How to execute via telnet using the port 110 for POP and 143 for IMAP connection.

On Windows:                                                               

Before you can use telnet via command prompt. Install first your telnet client and server for you to enable telnet service. You can install this under control panel and click ‘Add/Remove programs’ on XP or ‘Programs and Features’ on Vista, Windows 7.

Access your command prompt by pressing window key + R and type to the text field ‘cmd’

Once the ‘Black Screen’ appears, this is the command prompt type the following command:

for POP3: telnet my-domain-name.com 110

for IMAP: telnet my-domain-name.com 143 

This command also applies with Linux and MAC OSX. This command will only run via terminal to execute.

Here are the results or reply once you type in the commands:

For POP3: +OK [fields]

For IMAP: * OK [CAPABILITY IMAP4rev1 UIDPLUS CHILDREN NAMESPACE THREAD=ORDEREDSUBJECT THREAD=REFERENCES SORT QUOTA IDLE ACL ACL2=UNION STARTTLS] Courier-IMAP ready. Copyright 1998-2005 Double Precision, Inc. See COPYING for distribution information.

If the problems percist, you can ask help for technical to isolate this concern further.

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