139 lines
4.8 KiB
Plaintext
139 lines
4.8 KiB
Plaintext
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###################################################################################################
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##
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## ATTENTION: Do NOT use this configuration without your own customizations!
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## Please see the manual ('postfwd -m') for more information.
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##
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###################################################################################################
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##
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## Definitions
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##
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# Greylisting with postgrey @ 127.0.0.1:10031
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&&GREYLIST { \
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action=ask(127.0.0.1:10031); \
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};
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# Maintenance times
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&&MAINTENANCE { \
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date=15.01.2007 - 15.01.2007 ; \
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date=15.04.2007 - 15.04.2007 ; \
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date=15.07.2007 - 15.07.2007 ; \
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date=15.10.2007 - 15.10.2007 ; \
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time=03:00:00 - 04:00:00 ; \
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};
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# Whitelists
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&&TRUSTED_NETS { \
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client_address=192.168.1.0/22 ; \
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client_address=172.16.128.32/27 ; \
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};
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&&TRUSTED_HOSTS { \
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client_name~=\.domain1\.net$ ; \
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client_name~=\.domain2\.de$ ; \
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};
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&&TRUSTED_USERS { \
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sasl_username==bob ; \
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sasl_username==alice ; \
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};
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&&TRUSTED_TLS { \
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ccert_fingerprint==11:22:33:44:55:66:AA:BB:CC:DD:EE:FF ; \
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ccert_fingerprint==AA:BB:CC:DD:EE:FF:11:22:33:44:55:66 ; \
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encryption_keysize>=64 ; \
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};
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&&FREEMAIL { \
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client_name~=\.gmx\.net$ ; \
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client_name~=\.web\.de$ ; \
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client_name~=\.(aol|yahoo|h(ush|ot)mail)\.com$ ; \
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};
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&&STATIC { \
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# contains freemailers
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&&FREEMAIL ; \
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client_name~=[\.\-]static[[\.\-] ; \
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client_name~=^(mail|smtp|mout|mx)[\-]*[0-9]*\. ; \
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};
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&&DNSWLS { \
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rbl=list.dnswl.org ; \
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rbl=exemptions.ahbl.org ; \
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rbl=query.bondedsender.org ; \
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rbl=hostkarma.junkemailfilter.com/^127\.0\.0\.1$/3600 ; \
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rhsbl_client=hostkarma.junkemailfilter.com/^127\.0\.0\.1$/3600 ; \
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};
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# Spamchecks
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&&BADHELO { \
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client_name==!!($$(helo_name)) ; \
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};
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&&DYNAMIC { \
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client_name==unknown ; \
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client_name~=(\-.+){4} ; \
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client_name~=\d{5} ; \
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client_name~=[_\.\-]([axt]{0,1}dsl|br(e|oa)dband|ppp|pppoe|dynamic|dynip|ADSL|dial(up|in)|pool|dhcp|leased)[_\.\-] ; \
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};
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&&DNSBLS { \
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rbl=zen.spamhaus.org ; \
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rbl=list.dsbl.org ; \
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rbl=bl.spamcop.net ; \
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rbl=dnsbl.sorbs.net ; \
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rbl=ix.dnsbl.manitu.net ; \
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rhsbl=rddn.dnsbl.net.au ; \
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rhsbl=rhsbl.ahbl.org ; \
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rhsbl=rhsbl.sorbs.net ; \
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};
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##
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## Ruleset
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##
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# temporary reject and drop connection during maintenance window
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id=M_001 ; &&MAINTENANCE ; action=421 maintenance - please try again later
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# stress-friendly behaviour (will not match on postfix version pre 2.5)
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id=STRESS ; stress==yes ; action=dunno
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# Whitelists
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id=WL_001 ; &&TRUSTED_NETS ; action=dunno
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id=WL_002 ; &&TRUSTED_HOSTS ; action=dunno
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id=WL_003 ; &&TRUSTED_USERS ; action=dunno
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id=WL_004 ; &&TRUSTED_TLS ; action=dunno
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# DNSWL checks - lookup
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id=RWL_001 ; &&DNSWLS ; rhsblcount=all ; rblcount=all ; \
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action=set(HIT_dnswls=$$rhsblcount,HIT_dnswls+=$$rblcount,DSWL_text=$$dnsbltext)
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# DNSWL - whitelisting
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id=RWL_002 ; HIT_dnswls>=2 ; action=PREPEND X-PFW-STATE: INFO: [$$DSWL_text]
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id=RWL_003 ; HIT_dnswls>=1 ; action=PREPEND X-PFW-STATE: INFO: [$$DSWL_text] ; &&STATIC
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id=RWL_004 ; HIT_dnswls>=1 ; action=PREPEND X-PFW-STATE: INFO: [$$DSWL_text] ; $$client_name~=$$(sender_domain)$
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# DNSBL checks - lookup
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id=RBL_001 ; &&DNSBLS ; rhsblcount=all ; rblcount=all ; \
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action=set(HIT_dnsbls=$$rhsblcount,HIT_dnsbls+=$$rblcount,DSBL_text=$$dnsbltext)
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# DNSBL checks - evaluation
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id=RBL_002 ; HIT_dnsbls>=2 ; action=554 5.7.1 blocked using $$DSBL_count dnsbls, INFO: [$$DSBL_text]
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id=RBL_003 ; HIT_dnsbls>=1 ; &&DYNAMIC ; action=REJECT listed on dnsbl and $$client_name looks like dynip, INFO: [$$DSBL_text]
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id=RBL_004 ; HIT_dnsbls>=1 ; &&BADHELO ; action=REJECT listed on dnsbl and $$helo_name does not match $$client_name, INFO: [$$DSBL_text]
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# Rate limits
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id=RATE_001 ; HIT_dnsbls>=1; \
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action=rate($$client_address/1/300/450 4.7.1 please do not try more than once per 5 minutes)
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id=RATE_002 ; &&DYNAMIC ; \
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action=rate($$client_address/1/300/450 4.7.1 please do not try more than once per 5 minutes)
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# Selective greylisting
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id=GREY_001 ; action=dunno ; &&STATIC
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id=GREY_002 ; action=dunno ; $$client_name~=$$(sender_domain)$
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id=GREY_003 ; action=dunno ; HIT_dnswls>=1
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id=GREY_004 ; action=&&GREYLIST ; &&DYNAMIC
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id=GREY_005 ; action=&&GREYLIST ; HIT_dnsbls>=1
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# Greylisting should be safe during out-of-office times
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id=GREY_006 ; action=&&GREYLIST ; days=Sat-Sun
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id=GREY_007 ; action=&&GREYLIST ; days=Mon-Fri ; time=!!06:00:00-20:00:00
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