Problem with handling errors in POP3 message retrieval/deletion
cl at isbd.net
cl at isbd.net
Fri Sep 11 12:33:32 EDT 2015
I have a (fairly) simple script that does 'catchall' processing on my
POP3 mailbox. It looks for messages To: strings that *might* be for
me and then throws everything else away.
I was getting the occasional error as follows:-
Traceback (most recent call last):
File "/home/chris/.mutt/bin/getCatchall.py", line 59, in <module>
popmsg = pop3.retr(i+1)
File "/usr/lib/python2.7/poplib.py", line 232, in retr
return self._longcmd('RETR %s' % which)
File "/usr/lib/python2.7/poplib.py", line 167, in _longcmd
return self._getlongresp()
File "/usr/lib/python2.7/poplib.py", line 152, in _getlongresp
line, o = self._getline()
File "/usr/lib/python2.7/poplib.py", line 377, in _getline
raise error_proto('line too long')
poplib.error_proto: line too long
So I added a try/except round the pop3.retr() and now I get this error:-
Traceback (most recent call last):
File "/home/chris/.mutt/bin/getCatchall.py", line 63, in <module>
x = pop3.dele(i+1)
File "/usr/lib/python2.7/poplib.py", line 240, in dele
return self._shortcmd('DELE %s' % which)
File "/usr/lib/python2.7/poplib.py", line 160, in _shortcmd
return self._getresp()
File "/usr/lib/python2.7/poplib.py", line 136, in _getresp
raise error_proto(resp)
poplib.error_proto: Data Base /Diamond /Arm /Freeway /Pocket /Barbecue
/Bathroom /Eyes /Train /Hat /Planet /Web /Girl /Surveyor /Rocket
/Slave /Software /Vampire /Vacuum /Sun /Egg /Leg /Ice /Guitar
/Post-office /Pepper /Hat /Eartupletters:10,50:
AAMGQLMUHSMCCVXEOPQRDWUSFEJFSHPEAQWHh /Spiral /Garden /Tennis racquet
/Banana /Spectrum /Bed /Fruit /Earth /Wheelchair /Spoon /Bee /Highway
/God /Guitar /Sandpaper /Typewriter /Finger /Feather /Salt
/Electricity /Pants /Sphere /Table /Comet / /Bee /Button /Map /Data
Base /Hieroglyph /Carpet /Hose /Bank /Fire /Solid /Staircase /Eyes
/Rope /School /Onion /Barbecue /Gemstone /Ice-cream /Nail /Alphabet
/Feather /Compass /Bottle /Shop /Fruit /Map /Sphere /Coffee /Radar
/Tongue /Tapestry /Radar /Sandwich /Circus /Spectrum /Aeroplane /Clock
/Room /Stomach /Snail / Satellite /Worm /Money $$$$ /Bed /Pyramid /Boy
/Pepper /Fruit /Junk /Bank /Bird /Pebble /Chair /Microscope /Satellite
/Woman /Kaleidoscope /Perfume /Triangle /Sunglasses /Needle
/Thermometer /Freeway /Man /Mist upletters:10,50:
TQDPDUGSMYEPJGBPYCTEIKMNFXKCSNDY/Vulture /Thermometer /Treadmill
/Pillow /Hose /Necklace /Coffee-shop /Space Shuttle /Pyramid /Rope
/Surveyor /Spot Light /Nail /Bed /Mist /Sandwich /Family /Salt /Fan
/Air /Maze /Mouth /Vacuum /Tongue /Bible /Gate /Wheelchair /Jet
fighter /Bible /Tunnel /Navy /Festival /Shop /Tapestry /Shower
/Cappuccino /Sandpaper /PaintBrush /Prison /Sex /Church /Man /Meat
/Ring /Snail /Floodlight /Toilet /Shower /Computer /Tiger /Diamond
/Bathroom /Boss /Leather jacket /Dress /Ship /Finger /Torpedo /Car
/Compass /Water /Mist /Butterfly /Staircase /Child /Backpack /Umbrella
/Tiger /School /Explosive /Restaurant /Bird /Cycle /Television
/Cappuccino /Bible /Kaleidoscope /Drill /Church /Television
/Hieroglyph /Game /Fungus /Sword /Gloves /Highway /Box functon /2022
/browser /cowritten /livinglogic /ione /800 /susceptibles /psz
Can anyone make any suggestions as to how to overcome this issue, all
I want to do is throw away the offending message.
The code for the whole thing is as follows:-
#!/usr/bin/python
#
#
# Collect E-Mail from my catchall POP3 mailbox on tsohost, deliver anything
# that looks remotely useful and bin the rest
#
#
import getpass, poplib
import email
import mailbox
import string
import smtplib
import time
import mailLib
home = "/home/chris"
log = mailLib.initLog("getCatchall")
#
#
# Read the filter file
#
fltr = {}
f = open(home + "/.mutt/getCatchall.filter", 'r')
for ln in f: # for each line in filter
if ln[0] == '#': # ignore comments
continue
#
#
# split the line into fields and store in a dictionary
#
fld = ln.split()
fltr[fld[0]] = fld[1]
#
#
# Process the messages, do a maximum of 100 at a time
#
while (1):
#
#
# Connect to the POP3 server, get message count, exit if no messages
#
pop3 = poplib.POP3_SSL('pop.isbd.net')
pop3.user('catchall at isbd.net')
pop3.pass_('XXXXXXXX')
numMessages = len(pop3.list()[1])
if (numMessages == 0):
break
#
#
# Process a maximum of 100 messages
#
log.info(str(numMessages) + " messages")
for i in range(min(numMessages, 100)):
#
#
# Read each message into a string and then parse with the email module, if
# there's an error retrieving the message then just throw it away
#
try:
popmsg = pop3.retr(i+1)
except:
pop3.dele(i+1)
continue
log.info("Retrieved message number " + str(i+1))
msgstr = string.join(popmsg[1], "\n") # popmsg[1] is a list containing the lines of the message
msg = mailbox.mboxMessage(msgstr)
#
#
# Look for names from the filter file in To: and Cc:, deliver message if possibly relevant
#
for nm, dest in fltr.items():
if (msg.get("To","unknown").find(nm) >= 0) or (msg.get("Cc", "unknown").find(nm) >= 0):
log.info( "Sending message, Subject: " + msg.get("Subject", "No subject") + ", To: " + dest)
if '@' in dest:
try:
#
#
# Connect to the SMTP server and send the message
#
smtp = smtplib.SMTP('smtp.isbd.net')
smtp.login("catchall at isbd.net", "XXXXXXXX")
smtp.sendmail("catchall at isbd.net", dest, msgstr)
smtp.quit()
except:
#
#
# If the message can't be sent then give it to me locally
#
mailLib.deliverMboxMsg(dest, msg, log)
else:
#
#
# Put message in local mbox
#
mailLib.deliverMboxMsg(dest, msg, log)
break
#
#
# delete the message from the POP3 mailbox
#
log.info("Deleting message " + msg.get("To","unknown"))
pop3.dele(i+1)
#
#
# disconnect, only when this is done do the POP3 messages actually disappear
#
pop3.quit()
#
#
# Exit if no more messages (the normal case) otherwise wait a minute before
# processing any more, otherwise we get zombie messages which
# cause "poplib.error_proto: -ERR Can't open the message file - it's gone!"
#
if (numMessages > 100):
time.sleep(60)
else:
break
--
Chris Green
·
More information about the Python-list
mailing list