email verifier .py

[Fi8sVrs]

Yet Another Email Verifier 1.0

Verify emails by checking the "RCPT TO" return code from the SMTP server.

Hints:

• The output is separated by commas, so you can easily import it to another application (e.g. MS Excel).
  
• Create an address list by using the Smashing Email eXtractor!
  
• Failed checks are added at the bottom (! <domain>)
  

Requirements:

• python (tested with python 2.6.2)
  
• dnspython
  

Usage:

yaev.py <file>

file: absolute path to email-address list

Example:

[B]$ cat addresses.txt[/B]
[B]...[/B]
wolfgang.schaeuble@wk.bundestag.de
gm.schulz@gmail.com
jan.sipocz@gmail.com
brigitte.kopinits@gmail.com
r.buchmann@amag.at
annimarie.schaffer@gmail.com
iggy.popovic@gmail.com
erich.gabis@gmail.com
Kovacs.maria4@gmail.com
andreas.schimon@gmail.com
barbarajungreithmair@gmail.com
michael.gabis@gmail.com
[B]$ ./yaev.py addresses.txt > checked_emails.txt
$ cat checked_emails.txt
...[/B]
wolfgang.schaeuble@wk.bundestag.de,mail1.dbtg.de,554,5.7.1 Service unavailable; Client host [83.187.177.131] blocked using zen.spamhaus.org; http://www.spamhaus.org/query/bl?ip=83.187.177.131
gm.schulz@gmail.com,alt2.gmail-smtp-in.l.google.com,250,2.1.5 OK 6si6034pxi.95
jan.sipocz@gmail.com,alt2.gmail-smtp-in.l.google.com,250,2.1.5 OK 13si2013478pxi.35
brigitte.kopinits@gmail.com,alt2.gmail-smtp-in.l.google.com,250,2.1.5 OK 27si2008921pxi.56
r.buchmann@amag.at,srxx0055.amag.at,503,5.0.0 Need MAIL before RCPT
annimarie.schaffer@gmail.com,alt2.gmail-smtp-in.l.google.com,250,2.1.5 OK 35si2021257pxi.2
iggy.popovic@gmail.com,alt2.gmail-smtp-in.l.google.com,250,2.1.5 OK 37si2019611pxi.5
erich.gabis@gmail.com,alt2.gmail-smtp-in.l.google.com,250,2.1.5 OK 2si2010789pxi.52
Kovacs.maria4@gmail.com,alt2.gmail-smtp-in.l.google.com,250,2.1.5 OK 42si2017013pxi.17
andreas.schimon@gmail.com,alt2.gmail-smtp-in.l.google.com,250,2.1.5 OK 9si2018016pxi.13
barbarajungreithmair@gmail.com,alt2.gmail-smtp-in.l.google.com,250,2.1.5 OK 40si2003494pxi.87
michael.gabis@gmail.com,alt2.gmail-smtp-in.l.google.com,250,2.1.5 OK 37si2019846pxi.5
!gmx.de

Code:

#!/usr/bin/env python
# -*- coding: utf-8 -*-
#
# yaev.py
#
# Version: 1.0
#
# Copyright (C) 2009  novacane novacane[at]dandies[dot]org
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program.  If not, see <http://www.gnu.org/licenses/>.
#
# DO NOT FORGET TO INSTALL DNSPYTHON - http://www.dnspython.org/
#
# For more information visit:
# http://dandies.org/files/41b1d9240cf1df328f4e63d087769440-44.html
#

import os
import sys
import smtplib
import dns.resolver

def main(path_to_src_file):

    """ Get SMTP return code

    Verify emails by checking the "RCPT TO" return code from the SMTP server.
    NOTE: dropped vrfy command because provider disabled it to prevent attacks

    """

    failed_domains = []

    try:
        # Open the Source-File.
        file_emails = open(path_to_src_file)
    except IOError:
        print "Error reading file!"
        print "!> " + path_to_src_file
        sys.exit(1)

    # Loop through addresses. Each line represents an email-address.
    for line in file_emails:
        # Remove Linefeed.
        line = line.replace("\n", "")
        # The actual domain.
        domain = line.split("@")[1]

        # Do nothing if domain is already in the failed_domain list.
        if not domain in failed_domains:
            try:
                # Make a MX DNS query.
                answers = dns.resolver.query(domain, "MX")
                # OR: mx = str(answers[1].exchange)[:-1]
                for rdata in answers:
                    # Remove the dot from rdata.exchange.
                    mx = str(rdata.exchange)[:-1]
                    try:
                        # Connect to SMTP server.
                        smtp = smtplib.SMTP(mx)
                        # Polite people say hello first.
                        smtp.docmd("HELO microsoft.com")
                        # Indicates who is sending the mail.
                        smtp.docmd("MAIL FROM:", "<asdf@microsoft.com>")
                        # Indicates who is recieving the mail.
                        rcpt = smtp.docmd("RCPT TO:", "<" + line + ">")
                        # Print output.
                        print line + "," + mx + "," + \
                        str(rcpt[0]) + "," + str(rcpt[1])
                        # Close SMTP connection.
                        smtp.quit()
                    except smtplib.SMTPServerDisconnected:
                        # Add domain to list.
                        failed_domains.append(domain)   
                    # Use only the first server-address.
                    break

            # Raise exception if DNS query failed.
            except dns.resolver.NXDOMAIN:
                # Add domain to list.
                failed_domains.append(domain)

    # Close the Source-File.
    file_emails.close()

    # Output failed domains.
    if failed_domains:
        for item in failed_domains: print "!" + item

if __name__ == '__main__':
    if len(sys.argv) != 2:
        print "\n\t[*] yet another email verifier 1.0 [*]"
        print "\n\tUsage: yaev.py <file>"
        sys.exit(2)

    main(sys.argv[1])

Dounload source

[kapochi]

Email Verifier Pro 6.3

 

[bugwak]

Does this script still working?

[Dragos]

Protocol hasn't changed, but you can get IP banned from most of email providers today for using this method.