Windows

Testing SMTP Server from the command line

AWS-in 2017. 7. 7. 16:01

http://www.vsysad.com/2013/10/testing-smtp-server-from-the-command-line/


Method 1 – Telnet

I am going to assume that your server is Windows Server 2008 R2, although these steps will work on Server 2003 also. Another assumption is that you have the telnet client installed. If you don’t have it installed follow the steps in this post and then follow these instructions:

1. Fire up the command prompt and type telnet:

C:\Users\admin>telnet

2. At the telnet prompt, type set LocalEcho then press ENTER:

Welcome to Microsoft Telnet Client
Escape Character is 'CTRL+]'
Microsoft Telnet>set LocalEcho

3. Then type open localhost 25 and then press ENTER.

Welcome to Microsoft Telnet Client
Escape Character is 'CTRL+]'
Microsoft Telnet>set LocalEcho
Local echo on
Microsoft Telnet>open localhost 25

The output will look similar to this:

220 mail.vsysad.com Microsoft ESMTP MAIL Service, Version: 7.5.7601.17514 ready at Fri, 23 Aug 2013 01:02:03 +0000

4. Type helo me and then press ENTER. You should receive a 250 response from the SMTP Server meaning that it has accepted your command:

helo me
250 mail.vsysad.com Hello [127.0.0.1]

5. Then type the mail from:email@domain.com – obviously fill in the email address you are actually sending from and then press ENTER. The output will be similar to the below:

mail from:blog@vsysad.com
250 2.1.0 blog@vsysad.com....Sender OK

6. Type rcpt to:youremail@yourdomain.com – the address you are sending to and then press ENTER. The output will be similar to the below:

rcpt to:recipient@gmail.com
250 2.1.5 recipient@gmail.com

7. Type Data and then press ENTER, resulting in the following:

Data
354 Start mail input; end with <CRLF>.<CRLF>

8. Type Subject:This is a test email and then hit ENTER twice. Then type This is a test email being sent via telnet and hit ENTER. Hit ENTER again, then type a full stop (.), and then hit ENTER once more:

Subject:This is a test email
 
This is a test email being sent via telnet
 
.

9. The resulting output would be similar to this:

250 2.6.0 <WEB1Ze4CkNl4THZaN1E00000004@mail.vsysad.com> Queued mail for delivery

It means that an email has been generated and is in the queue and is ready to be delivered.

10. Now that you have finished, type quit and the connection to the SMTP Server will be closed:

quit
221 2.0.0 mail.vsysad.com Service closing transmission channel
 
Connection to host lost.

A screenshot of all the commands being run is below:


키워드 :SMTP테스트