Mail-Address Check

<syntaxhighlight lang="python">

1. !/usr/bin/python

1. Copyright (c) 2015 by Peter_Siegrist(SystemLoesungen) (PSS @ ZweierNet.ch)
2. pss.ZweierNet.ch
4. This program is absolutely free software.
5. Use it as you like but don't point the finger of blame to me.

from socket import * import sys import string

verbose = False mail_to_check = "";

commands = ['HELO xy',

           'RSET',
           'MAIL FROM: mailverification@zweiernet.ch',
           'RCPT TO: <__mail_to_check__>']

1. -- subs

def usage ():

   print('usage: ', sys.argv[0], '[-v] < mailserver-to-check-for > < port-on-server-25-or-587 > < email-adress-to-check >')
   sys.exit(False)

1. -- end subs

if len(sys.argv) < 4:

   usage()

i = 1 if len(sys.argv) == 5:

   if sys.argv[i] == '-v':
       verbose = True
       i+=1
   else:
       usage()

server = sys.argv[i] i+=1 port = int(sys.argv[i]) i+=1 mail_to_check = sys.argv[i]

sSocket = socket(AF_INET, SOCK_STREAM) sSocket.connect((server, port)) recv = sSocket.recv(1024) if verbose:

   print (recv.decode())

for c in commands:

   c = c.replace('__mail_to_check__', str(mail_to_check))
   if verbose:
       print(c)
   sSocket.send(c.encode() + '\r\n'.encode())
   recv = sSocket.recv(1024)
   if verbose:
       print (recv.decode())

recv5 = recv.decode().replace("\n", "").replace("\r", "") if recv5[-2:].lower() == 'ok':

   if verbose:
       print ('OK')
   sys.exit(True)

if verbose:

   print ('NOK')

sys.exit(False)