smtpcheckaddresses.py

#!/usr/bin/python
#
#    smtpcheckaddresses.py 
#
#    Tests email server
#
#    Copyright (C) 2009 Georg Lutz <georg AT NOSPAM georglutz DOT de>
#
#    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/>.

import datetime
import os.path
from optparse import OptionParser
import re
import smtplib
import sys

VERSIONSTRING = "0.1"


def buildTestMessage(email, str):
    '''Builds the raw text for the mail message including the email receipent and a unique string'''
    t = "From: <" + options.mailfrom + ">\n"
    t += "To: <" + email + ">\n"
    # RFC822 date:
    t+= "Date: " + datetime.datetime.now().strftime("%a, %d %b %Y %H:%M:%S %z") + "\n"
    t+= "User-Agent: smtpcheckaddresses.py\n"
    t+= "Subject: smtpcheckaddresses.py mail to " + email + "\n"
    t+= "\n"
    t+= "This is an automated test mail from smtpcheckaddresses.py\n"
    t+= "The identifier for this message is " + str
    return t

########### MAIN PROGRAM #############

parser = OptionParser(
	usage="%prog [options] --host hostname --file filename",
	version="%prog " + VERSIONSTRING + os.linesep +
	"Copyright (C) 2009 Georg Lutz <georg AT NOSPAM georglutz DOT de")

parser.add_option("", "--mailfrom",
		  default="",
		  dest="mailfrom", help="Sets the envelope from, default to an empty string")
parser.add_option("-f", "--file",
		  default="",
		  dest="file", help="file with mail addresses" )
parser.add_option("", "--host",
                  dest="host", help="hostname", default="")
parser.add_option("", "--port",
                  dest="port", type=int, default=25,
                  help="port, defaults to 25")
parser.add_option("-s", "--send",
		  action="store_true", dest="send", default=False,
		  help="Actually send test emails, defaults to False")

(options, args) = parser.parse_args()

if (len(options.host) == 0) or (len(options.file) == 0):
    parser.print_help()
    sys.exit(2)

filename = os.path.expanduser(options.file)
try:
    file = open(filename,"r")
except:
    print "File \"%s\" cannot be opened" % filename
    sys.exit(1)

line = file.readline()
addresses = []
while line != "":
    line = re.sub("\n", "", line)
    # Skip empty lines
    if len(line) > 0:
	addresses.append(line)
    line = file.readline()
file.close()

i = 0
for address in addresses:
    try:
	conn = smtplib.SMTP(options.host, options.port)
    except:
	print "Cannot connect to %s:%s" % (options.host, options.port)
	sys.exit(1)

    rc = conn.docmd("HELO xyz.de")
    if rc[0] < 200 or rc[0] > 299:
	print "Error: %s" % rc[1]
    rc = conn.docmd("MAIL FROM: <" + options.mailfrom + ">")
    if rc[0] < 200 or rc[0] > 299:
	print "Error: %s" % rc[1]
    cmd = "RCPT TO: <%s>" % address
    rc = conn.docmd(cmd)
    if rc[0] < 200 or rc[0] > 299:
	print "Adress NOK: %s" % address
    else:
	print "Adress OK: %s" % address
	if options.send:
	    print "Sending..."
	    msg = buildTestMessage(address, str(i))
	    i = i + 1
	    rc = conn.data(msg)
	    if rc[0] < 200 or rc[0] > 299:
		print "Error in data cmd: %s %s" % (rc[0], rc[1])
    conn.quit()