Ebroch at 17:01, 30 March 2024

2024-03-30T17:01:53Z

← Older revision		Revision as of 11:01, 30 March 2024
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	[[Adding_greylisting_to_QMT]]		[[Adding_greylisting_to_QMT\|Back]]

	<pre>		<pre>

Ebroch at 17:01, 30 March 2024

2024-03-30T17:01:33Z

← Older revision		Revision as of 11:01, 30 March 2024
Line 1:		Line 1:
			[[Adding_greylisting_to_QMT]]

	<pre>		<pre>
	#!/usr/bin/python		#!/usr/bin/python

Ebroch at 17:00, 30 March 2024

2024-03-30T17:00:09Z

← Older revision		Revision as of 11:00, 30 March 2024
Line 1:		Line 1:
			<pre>
	#!/usr/bin/python		#!/usr/bin/python

Line 164:		Line 165:
	# deliver valid email		# deliver valid email
	run_next()		run_next()
			</pre>

Ebroch: Created page with "#!/usr/bin/python # Before running this script make sure to have done : # mkdir /var/qmail/grey # chown qmaild.nofiles /var/qmail/grey # test with env TCPREMOTEIP="127.0.0.1" GREY="" ./greyd /bin/bash -c env | grep RB # and do not forget to delete the folder and file created before going in production # Design similar to http://www.jonatkins.com/page/software/qgreylist import os import sys import time minute = 60 hour = 6060 day = 6060*24 # Configuration start con..."

2024-03-30T16:59:41Z

Created page with "#!/usr/bin/python # Before running this script make sure to have done : # mkdir /var/qmail/grey # chown qmaild.nofiles /var/qmail/grey # test with env TCPREMOTEIP="127.0.0.1" GREY="" ./greyd /bin/bash -c env | grep RB # and do not forget to delete the folder and file created before going in production # Design similar to http://www.jonatkins.com/page/software/qgreylist import os import sys import time minute = 60 hour = 60*60 day = 60*60*24 # Configuration start con..."

New page

#!/usr/bin/python

# Before running this script make sure to have done :
# mkdir /var/qmail/grey
# chown qmaild.nofiles /var/qmail/grey
# test with env TCPREMOTEIP="127.0.0.1" GREY="" ./greyd /bin/bash -c env | grep RB
# and do not forget to delete the folder and file created before going in production
# Design similar to http://www.jonatkins.com/page/software/qgreylist

import os
import sys
import time

minute = 60
hour = 60*60
day = 60*60*24

# Configuration start

config = {}
config['WAITING'] = 1*minute # How long should a sender wait before being allowed
config['LAST_SEEN'] = 32*day # How long before we clean IP which have sent several time
config['FIRST_SEEN'] = 5*day # How long before we clean IP which have seen one time only
config['CLEANUP'] = 20*minute # How often we cleanup the IPS
config['BASE'] = os.path.join('/','var','qmail','grey')

log_per_ip = True # Log per IP (true) or per Class C (false)

# Configuration end

def log (*param):
sys.stderr.write('greyd: ')
sys.stderr.write(*param)
sys.stderr.write('\n')
sys.stderr.flush()

def out (code,*param):
log(*param)
sys.exit(code)

def run_next ():
if len(sys.argv) > 1:
try:
prog = sys.argv[1]
param = sys.argv[1:]
os.execve(prog,param,os.environ)
except:
out(1,"issue whish trying to exec %s" % prog)
else:
out(1,"can not execute the smtp application")

def cleanup ():
global config

try:
filename = os.path.join(config['BASE'],'clean')
last_clean = os.path.getmtime(filename)
except:
try:
open(filename,'w').close()
except:
log('can not create the timestamp file (%s) used for cleanup' % filename)
return

try:
now = time.time()
if now - last_clean > config['CLEANUP']:
log('running cleanup')
open(filename,'w').close()
for root, dirs, files in os.walk(config['BASE'], topdown=False):
if not dirs:
for file in files:
filename = os.path.join(root,file)
#log('checking %s' % filename)
try:
ctime = os.path.getctime(filename)
mtime = os.path.getmtime(filename)

deltac = now - ctime
deltam = now - mtime
except:
log('%s must have been deleted by another process' % filename)
continue
try:
# You sent us one mail 5 days ago, bye, bye
if ctime == mtime :
if deltac > config['FIRST_SEEN']:
os.unlink(filename)
log('removed inactive one off sender %s' % filename)
# You sent us several mails 32 days ago, bye, bye
else:
if deltam > config['LAST_SEEN']:
os.unlink(filename)
log('removed inactive sender %s' % filename)
except:
log('could not cleanup %s' % filename)
continue
except:
log('problem with cleanup')

# Main

# Get all environment variable

remote_ip = os.environ.get('TCPREMOTEIP')
if remote_ip == None:
# should never happen
out(1,"Can not get TCPREMOTEIP from environment")

if os.environ.get('GREY') == None:
run_next()

if os.environ.get('RELAYCLIENT') != None:
sys.stderr.write('Both GREY and RELAYCLIENT set for the same IP : %s' % remote_ip)
os.environ['RBLSMTPD'] = ''
run_next()

# Build the name of the file to check

ips = remote_ip.split('.')
foldername = config['BASE']

foldername = os.path.join(foldername,ips[0],ips[1])
filename = os.path.join(foldername,ips[2])

if log_per_ip:
filename += "-" + ips[3]

# Check time and perform according action

try:
now = time.time()

last_seen = os.path.getmtime(filename)
first_seen = os.path.getctime(filename)

delta_last = now - last_seen
delta_first = now - first_seen
except:
try:
os.makedirs(foldername,0700)
except:
# The folder most likely already exist
pass
try:
open(filename,'w').close()
os.environ['RBLSMTPD'] = 'greylisting, IP %s time -' % remote_ip
except:
log('issue trying the initial touching of the file %s (or creating the folder)' % filename)
cleanup()
run_next()

# if you never waited two minutes without sending
if delta_first < config['WAITING']:
try:
os.unlink(filename)
open(filename,'w').close()
os.environ['RBLSMTPD'] = 'greylisting, IP %s time %d' % (remote_ip,int(delta_last))
except:
log('issue with touching file %s' % filename)
cleanup()
run_next()

# deliver valid email
run_next()

Qmail-greyd - Revision history

Ebroch at 17:01, 30 March 2024

Ebroch at 17:01, 30 March 2024

Ebroch at 17:00, 30 March 2024