def _start_outbound_edge(args, queue):
from slimta.edge.smtp import SmtpEdge, SmtpValidators
from slimta.util.dnsbl import check_dnsbl
from slimta.smtp.auth import Auth, CredentialsInvalidError
from site_data import credentials, outbound_banner
class EdgeAuth(Auth):
def verify_secret(self, username, password, identity=None):
try:
assert credentials[username] == password
except (KeyError, AssertionError):
raise CredentialsInvalidError()
return username
def get_secret(self, username, identity=None):
try:
return credentials[username], username
except KeyError:
raise CredentialsInvalidError()
class EdgeValidators(SmtpValidators):
@check_dnsbl('zen.spamhaus.org')
def handle_banner(self, reply, address):
reply.message = outbound_banner
def handle_mail(self, reply, sender):
print self.session.auth_result
if not self.session.auth_result:
reply.code = '550'
reply.message = '5.7.1 Sender <{0}> Not allowed'.format(sender)
tls = _get_tls_args(args)
edge = SmtpEdge(('', args.outbound_port),
queue,
tls=tls,
validator_class=EdgeValidators,
auth_class=EdgeAuth,
command_timeout=20.0,
data_timeout=30.0)
edge.start()
ssl_edge = SmtpEdge(('', args.outbound_ssl_port),
queue,
validator_class=EdgeValidators,
auth_class=EdgeAuth,
tls=tls,
tls_immediately=True,
command_timeout=20.0,
data_timeout=30.0)
ssl_edge.start()
return edge, ssl_edge
def _start_outbound_edge(args, queue):
from slimta.edge.smtp import SmtpEdge, SmtpValidators
from slimta.util.dnsbl import check_dnsbl
from site_data import credentials, outbound_banner
class EdgeValidators(SmtpValidators):
@check_dnsbl('zen.spamhaus.org')
def handle_banner(self, reply, address):
reply.message = outbound_banner
def handle_auth(self, reply, creds):
try:
password = credentials[creds.authcid]
assert creds.check_secret(password)
except (KeyError, AssertionError):
reply.code = '535'
reply.message = '5.7.8 Authentication credentials invalid'
def handle_mail(self, reply, sender, params):
if not self.session.auth:
reply.code = '550'
reply.message = '5.7.1 Sender <{0}> Not allowed'.format(sender)
context = _get_ssl_context_server(args)
edge = SmtpEdge(('', args.outbound_port),
queue,
context=context,
validator_class=EdgeValidators,
auth=[b'PLAIN', b'LOGIN'],
command_timeout=20.0,
data_timeout=30.0)
edge.start()
return edge
def _start_inbound_edge(args, queue):
from slimta.edge.smtp import SmtpEdge, SmtpValidators
from slimta.util.dnsbl import check_dnsbl
from site_data import inbound_banner, deliverable_addresses
class EdgeValidators(SmtpValidators):
@check_dnsbl('zen.spamhaus.org', match_code='520')
def handle_banner(self, reply, address):
reply.message = inbound_banner
def handle_rcpt(self, reply, recipient, params):
if recipient not in deliverable_addresses:
reply.code = '550'
reply.message = \
'5.7.1 Recipient <{0}> Not allowed'.format(recipient)
tls = _get_tls_args(args)
edge = SmtpEdge(('', args.inbound_port),
queue,
max_size=10240,
validator_class=EdgeValidators,
tls=tls,
command_timeout=20.0,
data_timeout=30.0)
edge.start()
return edge
def _start_edge(self, name, options=None):
if not options:
options = getattr(self.cfg.edge, name)
new_edges = []
queue_name = options.queue
queue = self._start_queue(queue_name)
if options.type == 'smtp':
from slimta.edge.smtp import SmtpEdge
from .helpers import build_smtpedge_validators
from .helpers import fill_hostname_template
kwargs = {}
kwargs['context'] = self._get_server_ssl_context(options.tls)
kwargs['tls_immediately'] = options.tls_immediately
kwargs['validator_class'] = build_smtpedge_validators(options)
kwargs['auth'] = [b'PLAIN', b'LOGIN']
kwargs['command_timeout'] = 20.0
kwargs['data_timeout'] = 30.0
kwargs['max_size'] = int(options.get('max_size', 10485760))
kwargs['hostname'] = fill_hostname_template(options.hostname)
for listener in Listeners(options, 25):
new_edge = SmtpEdge(listener, queue, **kwargs)
if options.proxyprotocol:
ProxyProtocol.mixin(new_edge)
new_edge.start()
self.edges.append(new_edge)
elif options.type == 'http':
from slimta.edge.wsgi import WsgiEdge
from .helpers import build_wsgiedge_validators
from .helpers import fill_hostname_template
kwargs = {}
kwargs['hostname'] = fill_hostname_template(options.hostname)
kwargs['validator_class'] = build_wsgiedge_validators(options)
kwargs['uri_pattern'] = options.uri
kwargs['context'] = self._get_server_ssl_context(options.tls)
listener = self._get_listener(options, 8025)
for listener in Listeners(options, 8025):
new_edge = WsgiEdge(queue, listener=listener, **kwargs)
if options.proxyprotocol:
ProxyProtocol.mixin(new_edge)
new_edge.start()
self.edges.append(new_edge)
elif options.type == 'custom':
new_edge = custom_factory(options, queue)
self.edges.append(new_edge)
else:
msg = 'edge type does not exist: '+options.type
raise ConfigValidationError(msg)
def test_smtp_edge(self):
queue = self.mox.CreateMockAnything()
queue.enqueue(IsA(Envelope)).AndReturn([(Envelope(), 'testid')])
self.mox.ReplayAll()
server = SmtpEdge(('127.0.0.1', 0), queue)
server.start()
gevent.sleep(0)
client_sock = create_connection(server.server.address)
client = Client(client_sock)
client.get_banner()
client.ehlo('there')
client.mailfrom('*****@*****.**')
client.rcptto('*****@*****.**')
client.data()
client.send_empty_data()
client.quit()
client_sock.close()
def __init__(self,
msa,
mail_list_url,
mda_domain,
list_subject_prefix=None):
self.msa = msa
# Relay:
relay = DovecotLdaRelay(config['LDA']['dovecot_path'], timeout=10.0)
# Queue:
#env_db = shelve.open('envelope')
#meta_db = shelve.open('meta')
#storage = DictStorage(env_db, meta_db) # !!! replace with DiskStorage! (installed via pip install python-slimta-diskstorage)
storage = DiskStorage(config['MDA']['ds_env'],
config['MDA']['ds_meta'])
self.queue = Queue(
storage,
relay) # no backoff - just fail local delivery immediately
self.queue.start()
# Headers:
self.queue.add_policy(AddDateHeader())
self.queue.add_policy(AddMessageIdHeader())
self.queue.add_policy(AddReceivedHeader())
# Mailing List:
self.queue.add_policy(
MailingListDistribution(self.msa, mail_list_url, mda_domain,
list_subject_prefix))
# SpamAssassin:
#self.queue.add_policy(SpamAssassin())
# Edge:
#tls_args = {'keyfile': '/home/jmcaine/dev/temp/slimta/tls/key.pem', 'certfile': '/home/jmcaine/dev/temp/slimta/tls/certificate.pem'} -- gone, see https://docs.slimta.org/en/latest/blog/2016-11-14.html
ssl = SSLContext(PROTOCOL_SSLv23)
ssl.load_cert_chain(config['SSL']['certificate_path'],
config['SSL']['key_path'])
self.edge = SmtpEdge(('0.0.0.0', 25),
self.queue,
validator_class=MDA_Validators,
hostname=mda_domain,
context=ssl)
self.edge.start()
def __init__(self):
# Relay:
ssl = SSLContext(PROTOCOL_SSLv23)
ssl.load_cert_chain(config['SSL']['certificate_path'],
config['SSL']['key_path'])
self.relay = MxSmtpRelay(context=ssl,
connect_timeout=20,
command_timeout=10,
data_timeout=20,
idle_timeout=30)
# Queue:
#env_db = shelve.open('msa_envelope')
#meta_db = shelve.open('msa_meta')
#storage = DictStorage(env_db, meta_db) # !!! replace with DiskStorage! (installed via pip install python-slimta-diskstorage)
storage = DiskStorage(config['MSA']['ds_env'],
config['MSA']['ds_meta'])
def retry_backoff(envelope, attempts):
if attempts < 10:
return 60 * attempts * attempts # try again at increasingly long intervals; give up after 10 tries (100 minutes)
return None
self.queue = Queue(storage, self.relay, backoff=retry_backoff)
self.queue.start()
# Headers:
self.queue.add_policy(AddDateHeader())
self.queue.add_policy(AddMessageIdHeader())
self.queue.add_policy(AddReceivedHeader())
self.queue.add_policy(RecipientDomainSplit())
# !!! Add Forward policy here, to manage general forwarding (but not list distribution - do that in mda!)
# Edge:
self.edge = SmtpEdge(
('localhost', 587), self.queue, auth=False
) #, auth=True, validator_class=MSA_Validators) # ?!!! context=ssl, tls_immediately=True,
self.edge.start()