python - Exim filter pipe script only working on last email - not current -

this little combination processing second recent email coming in - not recent.

here's filter:

# exim filter save /srv/domain.com/bin/mail 660 pipe "/srv/domain.com/bin/sendtomailchimp.py" 

it works - i.e. can see saving mail file , call script.. great! far good..

here's script:

#!/usr/bin/python  mailbox_dir = '/srv/domain.com/mailboxes/enqace/mail' import mailbox import logging import time  time.sleep(10)  logging.basicconfig(filename='/srv/domain.com/mailboxes/enqace/logging.log',level=logging.debug)  inbox = mailbox.mbox(mailbox_dir)  logging.info('script called')  key in inbox.iterkeys():     logging.info(key)     message = inbox[key]     subject = message['subject']     logging.info(subject)   logging.info('===finish====') 

(prints 0-6 along subject lines of each)

i can tail log. runs on getting email - seems parse mail mbox , completes before getting recent email (i.e. last one). hits last 1 (the recent) next time email comes in. if there 6 mails in mail file new 1 - 7th - subject line doesn't come in log entry. when 8th comes in..

is script in effect running - before exim has had chance send mail file? if whats work around? adding sleep(10) doesn't seem seen above..

update: pulling python prompt can see python correct amount of keys (i.e. message num) when called outside of pipe

mailbox_dir = 'mail' import mailbox inbox = mailbox.mbox(mailbox_dir)  key in inbox.iterkeys():     print key 

(prints 0-7)