183 lines
4.3 KiB
Plaintext
183 lines
4.3 KiB
Plaintext
|
|
|
|
###################################################################################################
|
|
##
|
|
## ATTENTION: This example configuration uses features which require at least postfwd 1.30!
|
|
## Please see the manual ('postfwd -m') for example syntax for prior versions.
|
|
##
|
|
## WARNING: Only provided to show some capabilities of postfwd. Do NOT use this without
|
|
## modifications to suit your environment!
|
|
##
|
|
###################################################################################################
|
|
|
|
|
|
##
|
|
## Definitions
|
|
##
|
|
|
|
# Maintenance times
|
|
&&MAINTENANCE {
|
|
date=15.01.2007
|
|
date=15.10.2007 - 17.10.2007
|
|
days=Sat-Sun
|
|
time=03:00:00 - 04:00:00
|
|
}
|
|
|
|
# Whitelists
|
|
&&TRUSTED_NETS {
|
|
client_address=192.168.1.0/22
|
|
client_address=172.16.128.32/27
|
|
}
|
|
&&TRUSTED_HOSTS {
|
|
client_name~=\.domain1\.net$
|
|
client_name~=\.domain2\.de$
|
|
}
|
|
&&TRUSTED_USERS {
|
|
sasl_username==bob
|
|
sasl_username==alice
|
|
}
|
|
&&TRUSTED_TLS {
|
|
ccert_fingerprint==11:22:33:44:55:66:AA:BB:CC:DD:EE:FF
|
|
ccert_fingerprint==AA:BB:CC:DD:EE:FF:11:22:33:44:55:66
|
|
encryption_keysize>=64
|
|
}
|
|
&&FREEMAIL {
|
|
client_name~=\.gmx\.net$
|
|
client_name~=\.web\.de$
|
|
client_name~=\.(aol|yahoo|h(ush|ot)mail)\.com$
|
|
}
|
|
&&STATIC {
|
|
# contains freemailers
|
|
&&FREEMAIL
|
|
client_name~=[\.\-]static[[\.\-]
|
|
client_name~=^(mail|smtp|mout|mx)[\-]*[0-9]*\.
|
|
}
|
|
&&DNSWLS {
|
|
rbl=list.dnswl.org
|
|
rbl=exemptions.ahbl.org
|
|
rbl=query.bondedsender.org
|
|
rbl=hostkarma.junkemailfilter.com/^127\.0\.0\.1$/3600
|
|
rhsbl_client=hostkarma.junkemailfilter.com/^127\.0\.0\.1$/3600
|
|
}
|
|
|
|
# Spamchecks
|
|
&&BADHELO {
|
|
client_name==!!($$(helo_name))
|
|
}
|
|
&&DYNAMIC {
|
|
client_name==unknown
|
|
client_name~=(\-.+){4}
|
|
client_name~=\d{5}
|
|
client_name~=[_\.\-]([axt]{0,1}dsl|br(e|oa)dband|ppp|pppoe|dynamic|dynip|ADSL|dial(up|in)|pool|dhcp|leased)[_\.\-]
|
|
}
|
|
&&DNSBLS {
|
|
rbl=zen.spamhaus.org
|
|
rbl=list.dsbl.org
|
|
rbl=bl.spamcop.net
|
|
rbl=dnsbl.sorbs.net
|
|
rbl=ix.dnsbl.manitu.net
|
|
rhsbl=rddn.dnsbl.net.au
|
|
rhsbl=rhsbl.ahbl.org
|
|
rhsbl=rhsbl.sorbs.net
|
|
}
|
|
|
|
|
|
##
|
|
## Ruleset
|
|
##
|
|
|
|
# temporary reject and drop connection during maintenance window
|
|
id=M_001
|
|
&&MAINTENANCE
|
|
action=421 maintenance - please try again later
|
|
|
|
# stress-friendly behaviour (will not match on postfix version pre 2.5)
|
|
id=STRESS
|
|
stress==yes
|
|
action=dunno
|
|
|
|
# Whitelists
|
|
id=WL_001
|
|
&&TRUSTED_NETS
|
|
action=dunno
|
|
id=WL_002
|
|
&&TRUSTED_HOSTS
|
|
action=dunno
|
|
id=WL_003
|
|
&&TRUSTED_USERS
|
|
action=dunno
|
|
id=WL_004
|
|
&&TRUSTED_TLS
|
|
action=dunno
|
|
|
|
# DNSWL checks - lookup
|
|
id=RWL_001
|
|
&&DNSWLS
|
|
rhsblcount=all ; rblcount=all
|
|
action=set(HIT_dnswls=$$rhsblcount,HIT_dnswls+=$$rblcount,DSWL_text=$$dnsbltext)
|
|
|
|
# DNSWL - whitelisting
|
|
id=RWL_002
|
|
HIT_dnswls>=2
|
|
action=PREPEND X-PFW-STATE: INFO: [$$DSWL_text]
|
|
id=RWL_003
|
|
HIT_dnswls>=1
|
|
action=PREPEND X-PFW-STATE: INFO: [$$DSWL_text] ; &&STATIC
|
|
id=RWL_004
|
|
HIT_dnswls>=1
|
|
action=PREPEND X-PFW-STATE: INFO: [$$DSWL_text] ; $$client_name~=$$(sender_domain)$
|
|
|
|
# DNSBL checks - lookup
|
|
id=RBL_001
|
|
&&DNSBLS
|
|
rhsblcount=all ; rblcount=all
|
|
action=set(HIT_dnsbls=$$rhsblcount,HIT_dnsbls+=$$rblcount,DSBL_text=$$dnsbltext)
|
|
|
|
# DNSBL checks - evaluation
|
|
id=RBL_002
|
|
HIT_dnsbls>=2
|
|
action=554 5.7.1 blocked using $$DSBL_count dnsbls, INFO: [$$DSBL_text]
|
|
id=RBL_003
|
|
HIT_dnsbls>=1
|
|
&&DYNAMIC
|
|
action=REJECT listed on dnsbl and $$client_name looks like dynip, INFO: [$$DSBL_text]
|
|
id=RBL_004
|
|
HIT_dnsbls>=1
|
|
&&BADHELO
|
|
action=REJECT listed on dnsbl and $$helo_name does not match $$client_name, INFO: [$$DSBL_text]
|
|
|
|
# Rate limits
|
|
id=RATE_001
|
|
HIT_dnsbls>=1
|
|
action=rate($$client_address/1/300/450 4.7.1 please do not try more than once per 5 minutes)
|
|
id=RATE_002
|
|
&&DYNAMIC
|
|
action=rate($$client_address/1/300/450 4.7.1 please do not try more than once per 5 minutes)
|
|
|
|
# Selective greylisting
|
|
id=GREY_001
|
|
action=dunno
|
|
&&STATIC
|
|
id=GREY_002
|
|
action=dunno
|
|
$$client_name~=$$(sender_domain)$
|
|
id=GREY_003
|
|
action=dunno
|
|
HIT_dnswls>=1
|
|
id=GREY_004
|
|
action=greylisting
|
|
&&DYNAMIC
|
|
id=GREY_005
|
|
action=greylisting
|
|
HIT_dnsbls>=1
|
|
|
|
# Greylisting should be safe during out-of-office times
|
|
id=GREY_006
|
|
action=greylisting
|
|
days=Sat-Sun
|
|
id=GREY_007
|
|
action=greylisting
|
|
days=Mon-Fri
|
|
time=!!06:00:00-20:00:00
|
|
|