Test mail server settings using Command Prompt

1. Enable TELNET on the server
2. Check SMTP server available

NSLOOKUP 
Default Server: WWHPCM2.WWH.ORG.US
Address: WWH.ORG.US



Response:


Non-authoritative answer: 
WWH.ORG.US MX preference = 50, mail exchanger = mail.WWH.ORG.US 
Nslookup_big

3. Connect to the mail server

We will TELNET to connect to mail server over port 25 "mail.WWH.ORG.US"

Open a CMD prompt

TELNET MAIL.WWH.ORG.AU 25

4. Send an email

Following is the SMTP commands to send a test email.

Note: Backspace key does not work here, it will work onscreen but not be interpreted correctly.

You have to type these commands perfectly.

ehlo WWH.ORG.US
mail from:<testA@WWH.ORG.US> 
rcpt to:<testB@WWH.ORG.US> 
data 
Hello WORLD This is a test email
. 
quit