Sending mail from Linux server via putty

login as: listeruser

listeruser@10.106.20.241's password:

Welcome to Ubuntu 12.04.4 LTS (GNU/Linux 3.11.0-20-generic x86_64)

 * Documentation:  https://help.ubuntu.com/

  System information as of Mon Feb  9 12:02:30 IST 2015

  System load:  0.02               Processes:           107

  Usage of /:   11.4% of 35.31GB   Users logged in:     0

  Memory usage: 32%                IP address for eth0: 10.106.20.241

  Swap usage:   3%

  => There is 1 zombie process.

  Graph this data and manage this system at:

    https://landscape.canonical.com/

New release '14.04.1 LTS' available.

Run 'do-release-upgrade' to upgrade to it.

You have mail.

Last login: Fri Jan 30 10:40:35 2015 from lt-pc-389.lister.lan

$ telnet 10.106.20.253 25

Trying 10.106.20.253...

Connected to 10.106.20.253.

Escape character is '^]'.

220 l-intra.lister.lan ESMTP Postfix (Ubuntu)

ehlo srv1.lister.net

250-l-intra.lister.lan

250-PIPELINING

250-SIZE 10240000

250-VRFY

250-ETRN

250-STARTTLS

250-ENHANCEDSTATUSCODES

250-8BITMIME

250 DSN

MAIL FROM:rathinasamy.raju@domain.com

250 2.1.0 Ok

RCPT TO:rathinasamy.raju@domain.com

250 2.1.5 Ok

data

354 End data with <CR><LF>.<CR><LF>

This is the test messsage from console..

250 2.0.0 Ok: queued as 2871F440A7B

bye

502 5.5.2 Error: command not recognized

quit

221 2.0.0 Bye

Connection closed by foreign host.

$