How to check SMTP server in telnet

How to  test an SMTP Server using telnet

 

Below are my examples

 

 

Open up a command line

 

 

telnet mail.domain.com 25

 

 
HELO "local.domain.name"
 

 
MAIL FROM: your email
 

 
RCPT TO: to email address
 

 
DATA
 

 

Subject:  ...

 

 

.

 

 

QUIT

 

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Published on: Mar 03, 2021