smtp_relay.py

"""
SMTP->SES Relay Server
Author: Brian Humphrey, Loku.com
E-mail: bhump@loku.com
Date:   August 17, 2011

A Lightweight SMTP server that accepts all messages and relays them to SES

Credit to http://www.doughellmann.com/PyMOTW/smtpd/ for a tutorial on smtpd with asyncore

"""

import smtpd
import asyncore
from boto.ses.connection import SESConnection
from email.parser import Parser

AWS_KEY = '<YOUR AWS KEY>'
AWS_SECRET_KEY = '<YOUR AWS SECRET KEY>'
SERVER_IP_ADDRESS = "<YOUR SERVER IP ADDRESS>"
SERVER_PORT = 1025

class SESRelaySMTPServer(smtpd.SMTPServer):

	def process_message(self, peer, mailfrom, rcpttos, data):
		#Print the request information
		print 'Receiving message from:', peer
		print 'Message addressed from:', mailfrom
		print 'Message addressed to  :', rcpttos
		print 'Message length        :', len(data)
		#Send out via SES
		connection = SESConnection(aws_access_key_id = AWS_KEY, aws_secret_access_key = AWS_SECRET_KEY)
		#connection.send_raw_email(mailfrom, data)
		#Looks like this have changed:
		#https://github.com/boto/boto/issues/195
		connection.send_raw_email(data)
		#Works ok for me

server = SESRelaySMTPServer((SERVER_IP_ADDRESS, SERVER_PORT), None)
asyncore.loop()

smtp_relay_header_filter.py

"""
SMTP->SES Relay Server w/ Header Filter
Author: Brian Humphrey, Loku.com
E-mail: bhump@loku.com
Date:   August 17, 2011

A Lightweight SMTP server that accepts all messages, removes the Error-To header which offends SES, then relays them to SES

Credit to http://www.doughellmann.com/PyMOTW/smtpd/ for a tutorial on smtpd with asyncore

"""

import smtpd
import asyncore
from boto.ses.connection import SESConnection
from email.parser import Parser

AWS_KEY = '<YOUR AWS KEY>'
AWS_SECRET_KEY = '<YOUR AWS SECRET KEY>'
SERVER_IP_ADDRESS = "<YOUR SERVER IP ADDRESS>"
SERVER_PORT = 1025

class SESRelaySMTPServer(smtpd.SMTPServer):

	def process_message(self, peer, mailfrom, rcpttos, data):
		#Print the request information
		print 'Receiving message from:', peer
		print 'Message addressed from:', mailfrom
		print 'Message addressed to  :', rcpttos
		print 'Message length        :', len(data)
		#Parse the message and remove headers that are offensive to SES
		msg = Parser().parsestr(data)
		if 'Errors-To' in msg:
			del msg['Errors-To']
		#Send out via SES
		connection = SESConnection(aws_access_key_id = AWS_KEY, aws_secret_access_key = AWS_SECRET_KEY)
		#connection.send_raw_email(mailfrom, msg.as_string())
		#Looks like this have changed:
		#https://github.com/boto/boto/issues/195
		connection.send_raw_email(msg.as_string())
		#Haven't tested this one

server = SESRelaySMTPServer((SERVER_IP_ADDRESS, SERVER_PORT), None)
asyncore.loop()