Postfix log parser to json, just queue-id, message-id and status with remote server response.

postfix-to-json.py

#!/usr/bin/env python
'''
This program is free software. It comes without any warranty, to
the extent permitted by applicable law. You can redistribute it
and/or modify it under the terms of the Do What The Fuck You Want
To Public License, Version 2, as published by Sam Hocevar. See
http://www.wtfpl.net/ for more details.
'''

import re
import json

maillog = open("the-file.log","r")

regex = re.compile("\s([A-Z0-9]{10}):.*(status|message-id)=(.+)\s", re.M)

mailinfo = {}

for line in maillog:
	reobj = regex.search(line,)
	if reobj:
		if mailinfo.has_key(reobj.group(1)):
			mailinfo[reobj.group(1)].update({reobj.group(2): reobj.group(3)})
		else:
			mailinfo[reobj.group(1)] = {reobj.group(2): reobj.group(3)}

maillog.close()

print json.dumps(mailinfo)