Problem mit Python und imaplib2

python.exe mail.py
  29:23.05 imap.strato.de reader last 20 log messages:
Traceback (most recent call last):
  File "mail.py", line 175, in <module>  
    con = connect()
  File "mail.py", line 164, in connect  
    con = imaplib2.IMAP4_SSL(server)
  File "C:\Python36\lib\site-packages\imaplib2\imaplib2.py", line 2086, in __init__  
    IMAP4.__init__(self, host, port, debug, debug_file, identifier, timeout, debug_buf_lvl)
  File "C:\Python36\lib\site-packages\imaplib2\imaplib2.py", line 388, in __init__  
    self.welcome = self._request_push(tag='continuation').get_response('IMAP4 protocol error: %s')[1]  
  File "C:\Python36\lib\site-packages\imaplib2\imaplib2.py", line 187, in get_response  
    self.ready.wait(sys.float_info.max)
  File "C:\Python36\lib\threading.py", line 551, in wait  
    signaled = self._cond.wait(timeout)
  File "C:\Python36\lib\threading.py", line 299, in wait  
    gotit = waiter.acquire(True, timeout)
OverflowError: timestamp too large to convert to C _PyTime_t

import imaplib2
import time
import ssl
from threading import *
import email
import re
import sys
import configparser
import io
import time
import os
import socket

config = configparser.ConfigParser();

config.read("config_mail.ini");  

server = config.get("mail", "server");  
port = config.getint('mail', 'port');  
name = config.get('mail', 'name');  
password = config.get('mail', 'password');  
folder = config.get('mail', 'folder');  
subject_check = config.get('mail', 'subject_check');  
subject_contains = config.get('mail', 'subject_contains');  
from_check = config.get('mail', 'from_check');  
from_contains = config.get('mail', 'from_contains');  
mail_save = config.get('mail', 'mail_save');  
mail_file = config.get('mail', 'mail_file');  


def mail_handle(msg, num):
	for part in msg.walk():
		if part.get_content_maintype() == 'multipart':  
			continue
		if part.get('Content-Disposition') is None:  
			continue
	data = part.get_payload(decode=True)

	if (mail_save == 1):
		print("Save Mail")  
		f = open('mail_file', 'w')  
		f.write(data)
		f.close()
	con.store(num, '+FLAGS', '\Seen')  


def mail_check(con):
	typ, data = con.search(None, 'UNSEEN')  
	c = 0
	for num in data.split():
		typ, data = con.fetch(num, '(RFC822)')  
		c +=1
		text = data[1]
		msg = email.message_from_string(text)
		if (subject_check == 1 and from_check == 1):
			if (subject_contains in msg['subject'] and from_contains in msg['from']):  
				mail_handle(msg, num)
	
		elif (subject_check == 1 and from_check != 1):
			if (subject_contains in msg['subject']):  
				mail_handle(msg, num)

		elif (subject_check != 1 and from_check == 1):
			if (from_contains in msg['from']):  
				mail_handle(msg, num)

class Idler(object):
	def __init__(self, conn):
		self.thread = Thread(target=self.idle)
		self.con = conn
		self.event = Event()
 
	def start(self):
		self.thread.start()
 
	def stop(self):
		self.event.set()
 
	def join(self):
		self.thread.join()
 
	def idle(self):
		while True:
			mail_check(con)

			if self.event.isSet():
				return
			self.needsync = False

			def callback(args):
				if not self.event.isSet():
					self.needsync = True
					self.event.set()

			self.con.idle(callback=callback)

			self.event.wait()

			if self.needsync:
				self.event.clear()
				self.dosync()
 
	def dosync(self):
		mail_check(con)		

def connect(delay=30):
	while True:
		try:
			con = imaplib2.IMAP4_SSL(server)
			con.login(name,password)
			return con
		except imaplib2.IMAP4_SSL.abort:
				time.sleep(delay)
			else:
				raise

con = connect()

while True:
	try:
		con.select()
		inbox = con.select()
		idler = Idler(con)
		idler.start()
	except:
		print ('Error')  
		con = connect()