I currently use a Postfix+Postgrey+Dovecot(LDA) configuration, while
postgrey does an awesome job given the few resources it uses, I've noticed
an increase in spam, so have decided to add a spam filter to the mix.
I am following the instructions in postfix.txt to setup dspam as a content
filter however I can't seem to get the emails delivered.
The mail hits the dspam daemon and claims it
24939: [06/13/2009 11:38:26] message result: NOT SPAM
24939: [06/13/2009 11:38:26] delivering message
24939: [06/13/2009 11:38:26] Opening pipe to LDA:
24939: [06/13/2009 11:38:26] LDA returned success
24939: [06/13/2009 11:38:26] DSPAM Instance Shutdown. Exit Code: 0
My understanding of this setup was that the mail would be sent to the dspam
daemon for processing then back to postfix for delivery, but this doesn't
seem to be happening. So I've missed a setting somewhere or completely
misunderstood how it works. Perhaps someone can shed some light on the
situation.
Here are the relevant configurations
# /etc/dspam.conf
Home /var/dspam
DeliveryHost 127.0.0.1
DeliveryIdent localhost
DeliveryPort 10026
DeliverProto SMTP
OnFail error
Trust root
Trust dspam
Trust apache
Trust mail
Trust mailnull
Trust smmsp
Trust daemon
Trust dovecot
Debug *
TrainingMode teft
TestConditionalTraining on
Feature whitelist
Algorithm graham burton
Tokenizer chain
PValue bcr
WebStats on
ImprobabilityDrive on
Preference "spamAction=tag"
Preference "signatureLocation=message" # 'message' or 'headers'
Preference "showFactors=on"
Preference "spamSubject=SPAM"
AllowOverride trainingMode
AllowOverride spamAction spamSubject
AllowOverride statisticalSedation
AllowOverride enableBNR
AllowOverride enableWhitelist
AllowOverride signatureLocation
AllowOverride showFactors
AllowOverride optIn optOut
AllowOverride whitelistThreshold
HashRecMax 98317
HashAutoExtend on
HashMaxExtents 0
HashExtentSize 49157
HashPctIncrease 10
HashMaxSeek 10
HashConnectionCache 10
Notifications off
PurgeSignatures 14 # Stale signatures
PurgeNeutral 90 # Tokens with neutralish probabilities
PurgeUnused 90 # Unused tokens
PurgeHapaxes 30 # Tokens with less than 5 hits (hapaxes)
PurgeHits1S 15 # Tokens with only 1 spam hit
PurgeHits1I 15 # Tokens with only 1 innocent hit
LocalMX 127.0.0.1
SystemLog on
UserLog on
TrainPristine on
Opt out
ParseToHeaders on
ChangeModeOnParse on
ChangeUserOnParse full
ServerPID /var/run/dspam.pid
ServerMode auto
ServerIdent "localhost.localdomain"
ServerParameters "--deliver=innocent,spam"
ServerDomainSocketPath "/tmp/dspam.sock"
ProcessorURLContext on
ProcessorBias on
StripRcptDomain off
# /etc/postfix/master.cf
smtp inet n - n - - smtpd
-o content_filter=lmtp:unix:/tmp/dspam.sock
pickup fifo n - n 60 1 pickup
cleanup unix n - n - 0 cleanup
qmgr fifo n - n 300 1 qmgr
tlsmgr unix - - n 1000? 1 tlsmgr
rewrite unix - - n - - trivial-rewrite
bounce unix - - n - 0 bounce
defer unix - - n - 0 bounce
trace unix - - n - 0 bounce
verify unix - - n - 1 verify
flush unix n - n 1000? 0 flush
proxymap unix - - n - - proxymap
proxywrite unix - - n - 1 proxymap
smtp unix - - n - - smtp
relay unix - - n - - smtp
-o smtp_fallback_relay=
showq unix n - n - - showq
error unix - - n - - error
retry unix - - n - - error
discard unix - - n - - discard
local unix - n n - - local
virtual unix - n n - - virtual
lmtp unix - - n - - lmtp
anvil unix - - n - 1 anvil
scache unix - - n - 1 scache
localhost:10026 inet n - n - - smtpd
-o content_filter=
-o
receive_override_options=no_unknown_recipient_checks,no_header_body_checks
-o smtpd_helo_restrictions=
-o smtpd_client_restrictions=
-o smtpd_sender_restrictions=
-o smtpd_recipient_restrictions=permit_mynetworks,reject
-o mynetworks=127.0.0.0/8
-o smtpd_authorized_xforward_hosts=127.0.0.0/8
# /etc/postfix/main.cf
alias_database = $alias_maps
alias_maps = hash:/etc/postfix/aliases
command_directory = /usr/sbin
config_directory = /etc/postfix
daemon_directory = /usr/lib/postfix
data_directory = /var/lib/postfix
debug_peer_level = 2
html_directory = no
mail_owner = mail
mailbox_command = /usr/lib/dovecot/deliver
mailq_path = /usr/bin/mailq
manpage_directory = /usr/man
mydomain = die.net.au
myhostname = die.net.au
mynetworks_style = host
myorigin = $mydomain
newaliases_path = /usr/bin/newaliases
queue_directory = /var/spool/postfix
readme_directory = no
sample_directory = /etc/postfix
sendmail_path = /usr/sbin/sendmail
setgid_group = postdrop
smtpd_helo_required = yes
smtpd_recipient_restrictions = permit_mynetworks
permit_sasl_authenticated
reject_invalid_hostname
reject_non_fqdn_sender
reject_non_fqdn_recipient
reject_unknown_sender_domain
reject_unknown_recipient_domain
reject_unauth_destination
reject_rbl_client cbl.abuseat.org
reject_rbl_client sbl-xbl.spamhaus.org
reject_rbl_client bl.spamcop.net
reject_rhsbl_sender dsn.rfc-ignorant.org
check_policy_service inet:127.0.0.1:60000
smtpd_sasl_auth_enable = yes
smtpd_sasl_path = private/auth
smtpd_sasl_type = dovecot
smtpd_tls_cert_file = /etc/ssl/certs/postfix.pem
smtpd_tls_key_file = $smtpd_tls_cert_file
smtpd_tls_security_level = may
unknown_local_recipient_reject_code = 550
virtual_alias_maps = hash:/etc/postfix/virtual
--
Lucas Hazel <[email protected]>
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