Script that sends spoofed emails

mail.py

#!/usr/bin/env python

from smtplib import SMTP_SSL as SMTP 
from email.mime.text import MIMEText
from optparse import OptionParser
from email.Utils import formatdate

import sys

if __name__ == '__main__':
    from sys import argv
    opt = OptionParser()
    opt.add_option('', '--host')
    opt.add_option('-u', '--user')
    opt.add_option('-p', '--password')
    opt.add_option('-f', '--sender')
    opt.add_option('-t', '--to')
    opt.add_option('-m', '--message')
    opt.add_option('-s', '--subject')
    try:
        (options, args) = opt.parse_args()
        if len(args) == 0:
            if options.host is None:
                raise ValueError("no --host option")
            elif options.user is None:
                raise ValueError("no --user option")
            elif options.password is None:
                raise ValueError("no --password option")
            elif options.sender is None:
                raise ValueError("no --from option")
            elif options.to is None:
                raise ValueError("no --to option")
            elif options.message is None:
                raise ValueError("no --message option")
            elif options.subject is None:
                raise ValueError("no --subject option")
            else:
                text_subtype = 'plain'
                msg = MIMEText(options.message, text_subtype)
                msg['Subject'] = options.subject
                msg['To'] = options.to
                msg['From'] = options.sender
                msg['Date'] = formatdate()

                conn = SMTP(options.host)
                conn.set_debuglevel(False)
                conn.login(options.user, options.password)
                
                try:
                    conn.sendmail(options.sender, options.to, msg.as_string())
                except Exception, e:
                    raise e
                finally:
                    conn.quit()
    except ValueError, e:
        opt.error(e.message)
    except Exception, e:
        sys.exit("mail failed; %s" % e.message)