A fake smtp server, use system sendmail to send the mail. (need Python > 2.4)

fake_smtp.py

#!/usr/bin/env python
"""A fake smtp server, use system sendmail to send the mail. (need Python > 2.4)"""

import smtpd
import asyncore
from subprocess import Popen, PIPE

class FakeSMTPServer(smtpd.SMTPServer):
    """A Fake smtp server"""

    def __init__(*args, **kwargs):
        print "Running fake smtp server on port 25"
        smtpd.SMTPServer.__init__(*args, **kwargs)

    def process_message(self, peer, mailfrom, rcpttos, data):
        try:
            p=Popen(['/usr/sbin/sendmail', '-t'], stdin=PIPE)
            p.communicate(data)
            print "{0}({1}) sendmail success".format(mailfrom, peer)
        except Exception, e:
            print "{0}({1}) sendmail fail: {2}".format(mailfrom, peer, e)


if __name__ == "__main__":
    smtp_server = FakeSMTPServer(('localhost', 25), None)
    try:
        asyncore.loop()
    except KeyboardInterrupt:
        smtp_server.close()