適当なMTAサーバー 
特定のドメインを特定のIPに流し、それ以外のドメインはDNSを引いて転送するMTAサーバーです。
真面目に動作検証していませんので、お遊び程度に使ってください。
特定のドメインな設定はソース嫁（お
真面目に動作検証していませんので、お遊び程度に使ってください。
特定のドメインな設定はソース嫁（お
MTA.py
# -*- coding: Shift-JIS -*-
import sys,sqlite3,asyncore,smtpd,smtplib,datetime,socket
from email import message_from_string
from email.Header import decode_header,Header
from email.MIMEText import MIMEText
from time import time
from email.Utils import formatdate
sendHost = ['licorice.jp','shuffle.com']
def logWrite(msg):
fileName = datetime.date.today().isoformat() + '.log'
d = datetime.datetime.today()
h = '%s:%s:%s.%sn' % (d.hour, d.minute, d.second, d.microsecond)
fw = open(fileName, 'a')
fw.write(h + ': ' + msg + '\n')
fw.close()
def create_message(from_addr, to_addr, subject, body, encoding):
# 'text/plain; charset="encoding"'というMIME文書を作ります
msg = MIMEText(body, 'plain', encoding)
msg['Subject'] = Header(subject, encoding)
msg['From'] = from_addr
msg['To'] = to_addr
msg['Date'] = formatdate()
return msg
def send(ipAdr,from_addr, to_addr, msg):
s = smtplib.SMTP(ipAdr)
s.sendmail(from_addr, [to_addr], msg.as_string())
s.close()
class MySMTPServer(smtpd.SMTPServer):
def process_message(self, peer, mailfrom, rcpttos, data):
msg = message_from_string(data)
# メールを解析
h = decode_header(msg.get('subject'))
subject = ''
for s, c in h:
subject += s
cset = msg.get_param('charset')
b = msg.get_payload(decode=True)
body = b
to = decode_header(msg.get('to'))
mailto = ''
for t1,t2 in to:
mailto += t1
#ファイルに書き出し
logMsg= 'Receive mail: From=%s,To=%s,Subject=%s,Body=%s,Date=%s' % (mailfrom,mailto,subject,body,msg['Date'])
print logMsg
logWrite(logMsg)
#MTA処理
#Toのメールを分析
mName,mDomain = mailto.split('@')
hostIP = ''
if mDomain in sendHost:
print '特定のホストへ転送'
hostIP = '192.168.1.163' # 特定のホストへ流す
else :
print 'DNSを引いて転送'
hostIP = socket.gethostbyname(mDomain) # DNSを引く
msg2 = create_message(mailfrom, mailto, subject, body,'ISO-2022-JP')
send(hostIP,mailfrom, mailto , msg2)
logMsg = 'Mail was delivered. IP=[%s],Subject=%s,Body=%s' % (hostIP ,subject,body)
print logMsg
logWrite(logMsg)
if __name__ == '__main__':
MySMTPServer((sys.argv[1], int(sys.argv[2])), None)
asyncore.loop()
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