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#How to use telnet to communicate with a smtp server install#
#How to use telnet to communicate with a smtp server password#

Upon successful completion of Step 8, Enter the following command :ġ0. Subject: This is a test message and then press ENTER Twice.ĩ. Upon successful completion of Step 7, Enter the following command : Response should be : 354 Start mail input end with. Upon successful completion of Step 6, Enter the following command : If the Response Fails with Error : Unable to Relay, then Check the Relay Settings in Exchangeįor Exchange 2000 & 2003 : For Exchange 2007 : /en-us/library/bb232021(EXCHG.80).aspxħ. Upon successful completion of Step 5, Enter the following command :Įxample : RCPT should be : 250 OK - Recipient Upon successful completion of Step 4, Enter the following command :Ħ. Note : For some system the 'EHLO' command may not work and 'HELO' can be tried.ĥ. Once connected, enter the following command :Ģ50-MySMTP_ Hello If a connection is not established with port 25, contact the email server administrator.Ĥ. Note: Port 25 is the standard SMTP port, but it could also be different. This connects to the specified server on port 25.

Note : In some versions the command may be: set LocalEcho. Set Local_Echo, to view what has been entered.

#How to use telnet to communicate with a smtp server install#

Then make sure the TELNET CLIENT is installed.įollow the steps below to install TELNET CLIENT on Windows Server 20 R2: This starts the Microsoft telnet client.įor 2008 Server, if the TELNET command shows error "internal/external bad command" Solutionįollow the steps below to test the settings supplied for the Simple Mail Transfer Protocol (SMTP) e-mail setup notification dialog box.īefore entering information in the SMTP Server name, SMTP Port, and From Address boxes, follow these steps to test the settings:Ģ. (ie: Telnet 25)How to test Simple Mail Transfer Protocol notification using telnet. NOTE: Telnet support has been removed from MacOS 10.13 High Sierra and later releases. Perform a Telnet Test on a Apple macOS 10.7.x to 10.12.x:

Type quit and press Enter to disconnect from the Mail Server.

NOTE: A response similar to 250 Queued mail for deliver means the command was successful.

Type a single period (.) on a blank line followed by pressing Enter to end the message.

Enter the message text for the Email to be sent.

NOTE: A response similar to 354 Send Data means the command was successful. NOTE: A response similar to 250 OK - Recipient means the command was successful. NOTE: A response similar to 250 Sender OK means the command was successful.

#How to use telnet to communicate with a smtp server password#

In most cases, the email address is the username, and password is the password of the email account on the mail server. NOTE: The server may require a username and password if SMTP Authentication is enabled. Use the command helo instead, if the server returns an error with the ehlo command.NOTE: If connection to the SMTP server is successful, you will receive a reply similar to ' 220 ESMTP Server'. Type the command open and press Enter.

NOTE: Type the following commands carefully as the backspace key is interpreted as a character by the Telnet Client software.

Close the Programs and Features window.Select Turn Windows Features On or Off.Go to Large Icons or Small Icons under Catagory View.Type Control Panel into the Search Field.Perform a Telnet Test on a Windows 7, 8 or 10 PC: NOTE: The steps to Perform a Telnet Test depending upon the Operating System used. Also note that if any Encryption or SMTP Authentication is used on the server, the steps may not work entirely, but can be used to verify connectivity and online status of the mail server. This information would be the IP Address or DNS Hostname of the Mail server, the Port number used to connect, as well as an Email account on the server. NOTE: This solution requires the SMTP Servers connection information. DocuShare Enterprise Content Management.