smtp - Why can't I send a mail to myself using python smtplib?

Question

I am using this code taken from here:

import smtplib

def prompt(prompt):
    return raw_input(prompt).strip()

fromaddr = prompt("From: ")
toaddrs  = prompt("To: ").split()
print "Enter message, end with ^D (Unix) or ^Z (Windows):"

# Add the From: and To: headers at the start!
msg = ("From: %s
To: %s

"
       % (fromaddr, ", ".join(toaddrs)))
while 1:
    try:
        line = raw_input()
    except EOFError:
        break
    if not line:
        break
    msg = msg + line

print "Message length is " + repr(len(msg))

server = smtplib.SMTP('localhost')
server.set_debuglevel(1)
server.sendmail(fromaddr, toaddrs, msg)
server.quit()

I put my gmail mail account in the sender and in the reciver but I get this error:

Traceback (most recent call last):
  File "C:/Python27/smtpExample.py", line 24, in <module>
    server = smtplib.SMTP('localhost')
  File "C:Python27libsmtplib.py", line 242, in __init__
    (code, msg) = self.connect(host, port)
  File "C:Python27libsmtplib.py", line 302, in connect

    self.sock = self._get_socket(host, port, self.timeout)
  File "C:Python27libsmtplib.py", line 277, in _get_socket
    return socket.create_connection((port, host), timeout)
  File "C:Python27libsocket.py", line 571, in create_connection
    raise err
error: [Errno 10061] No connection could be made because the target machine actively refused it

Answer 1

You're not running SMTP server on your machine.

see: No connection could be made because the target machine actively refused it