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. All Rights reserved.
5. This program is free software; you can redistribute it and/or
6. modify it under the terms of the GNU General Public License as
7. published by the Free Software Foundation.
9. This program is distributed in the hope that it will be useful,
10. but WITHOUT ANY WARRANTY; without even the implied warranty of
11. MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12. GNU General Public License for more details.

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()) sys.stdout.flush()

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

recv5 = recv.decode().replace("\n", "").replace("\r", "") if recv5[-2:].lower() == 'ok': if verbose: print ('OK') sys.stdout.flush() sys.exit(True) if verbose: print ('NOK') sys.stdout.flush() sys.exit(False)