Hot to send a test email by telnet a SMTP SERVER [<username>@localhost ~]# telnet 192.168.x.x 25Trying 192.168.x.x …Connected to 192.168.x.x (192.168.x.x)Escape character is ‘^]’.220 Welcome to xxx SMTP service!HELO local.abc.com250 mailserver: Hello local.abc.comMAIL FROM: [email protected] [email protected]: Sender okRCPT TO: [email protected] [email protected]: Recipient okDATA354 Send data now. Terminate with .Subject: mail server testing.250 mailserver: Message accepted for deliveryquit221 mailserver closing Read More