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-rw-r--r--roles/MX/files/etc/postfix/reject-unknown-client-hostname.cf10
-rw-r--r--roles/MX/tasks/main.yml9
-rw-r--r--roles/MX/templates/etc/postfix/access-list.cidr.j216
-rw-r--r--roles/MX/templates/etc/postfix/main.cf.j251
-rw-r--r--roles/common/files/etc/logcheck/ignore.d.server/postfix-local5
5 files changed, 71 insertions, 20 deletions
diff --git a/roles/MX/files/etc/postfix/reject-unknown-client-hostname.cf b/roles/MX/files/etc/postfix/reject-unknown-client-hostname.cf
new file mode 100644
index 0000000..6969f75
--- /dev/null
+++ b/roles/MX/files/etc/postfix/reject-unknown-client-hostname.cf
@@ -0,0 +1,10 @@
+server_host = ldapi://%2Fvar%2Fspool%2Fpostfix-mx%2Fprivate%2Fldapi/
+version = 3
+search_base = fvd=%d,ou=virtual,dc=fripost,dc=org
+domain = static:all
+scope = one
+bind = sasl
+sasl_mechs = EXTERNAL
+query_filter = (&(objectClass=FripostVirtualList)(!(objectClass=FripostPendingEntry))(fvl=%u)(fripostIsStatusActive=TRUE))
+result_attribute = fvl
+result_format = reject_unknown_client_hostname
diff --git a/roles/MX/tasks/main.yml b/roles/MX/tasks/main.yml
index bd6f088..78362ca 100644
--- a/roles/MX/tasks/main.yml
+++ b/roles/MX/tasks/main.yml
@@ -17,6 +17,7 @@
with_items:
- main.cf
- master.cf
+ - access-list.cidr
notify:
- Reload Postfix
@@ -61,6 +62,14 @@
owner=root group=root
mode=0644
+- name: Copy recipient access(5) map
+ copy: src=etc/postfix/reject-unknown-client-hostname.cf
+ dest=/etc/postfix-{{ postfix_instance[inst].name }}/reject-unknown-client-hostname.cf
+ owner=root group=root
+ mode=0644
+ notify:
+ - Reload Postfix
+
- name: Compile the Postfix transport maps
# trivial-rewrite(8) is a long-running process, so it's safer to reload
postmap: instance={{ postfix_instance[inst].name }}
diff --git a/roles/MX/templates/etc/postfix/access-list.cidr.j2 b/roles/MX/templates/etc/postfix/access-list.cidr.j2
new file mode 100644
index 0000000..bd6e3d8
--- /dev/null
+++ b/roles/MX/templates/etc/postfix/access-list.cidr.j2
@@ -0,0 +1,16 @@
+########################################################################
+# Access list, see cidr_table(5)
+#
+# {{ ansible_managed }}
+# Do NOT edit this file directly!
+
+{% if ipsec_subnet is defined %}
+{{ ipsec_subnet }} permit
+{% endif %}
+
+{% for ip in lookup('pipe', 'dig +short outgoing.fripost.org A').splitlines() | sort -%}
+{{ ip }}/32 permit
+{% endfor %}
+{% for ip in lookup('pipe', 'dig +short outgoing.fripost.org AAAA').splitlines() | sort -%}
+{{ ip }}/128 permit
+{% endfor %}
diff --git a/roles/MX/templates/etc/postfix/main.cf.j2 b/roles/MX/templates/etc/postfix/main.cf.j2
index 8e6040f..e5792c4 100644
--- a/roles/MX/templates/etc/postfix/main.cf.j2
+++ b/roles/MX/templates/etc/postfix/main.cf.j2
@@ -93,40 +93,44 @@ invalid_hostname_reject_code = 554
multi_recipient_bounce_reject_code = 554
non_fqdn_reject_code = 554
relay_domains_reject_code = 554
-unknown_address_reject_code = 554
-unknown_client_reject_code = 554
-unknown_hostname_reject_code = 554
unknown_local_recipient_reject_code = 554
unknown_relay_recipient_reject_code = 554
unknown_virtual_alias_reject_code = 554
unknown_virtual_mailbox_reject_code = 554
+postscreen_access_list =
+ permit_mynetworks
+ cidr:$config_directory/access-list.cidr
postscreen_dnsbl_whitelist_threshold = -1
+
postscreen_blacklist_action = drop
-postscreen_dnsbl_threshold = 3
+postscreen_dnsbl_threshold = 8
postscreen_dnsbl_action = enforce
postscreen_dnsbl_sites =
- zen.spamhaus.org*2
+ zen.spamhaus.org=127.0.0.[10;11]*8
+ zen.spamhaus.org=127.0.0.[4..7]*6
+ zen.spamhaus.org=127.0.0.3*4
+ zen.spamhaus.org=127.0.0.2*3
#swl.spamhaus.org*-4
- b.barracudacentral.org*2
- bl.spameatingmonkey.net*2
- bl.spamcop.net
- dnsbl.sorbs.net
- psbl.surriel.com
- bl.mailspike.net
+ b.barracudacentral.org=127.0.0.2*7
+ bl.mailspike.net=127.0.0.2*5
+ bl.mailspike.net=127.0.0.[10..12]*4
+ wl.mailspike.net=127.0.0.[18..20]*-2
+ bl.spameatingmonkey.net=127.0.0.2*4
+ bl.spamcop.net=127.0.0.2*2
+ dnsbl.sorbs.net=127.0.0.10*8
+ dnsbl.sorbs.net=127.0.0.5*6
+ dnsbl.sorbs.net=127.0.0.7*3
+ dnsbl.sorbs.net=127.0.0.8*2
+ dnsbl.sorbs.net=127.0.0.6*2
+ dnsbl.sorbs.net=127.0.0.9*2
list.dnswl.org=127.0.[0..255].0*-2
list.dnswl.org=127.0.[0..255].1*-3
list.dnswl.org=127.0.[0..255].[2..3]*-4
postscreen_greet_action = enforce
-postscreen_whitelist_interfaces =
-{%- for ip in lookup('pipe', 'dig +short '+ postfix_instance.MX.backup +' A').splitlines() %}
- !{{ ip }}
-{%- endfor %}
-{%- for ip in lookup('pipe', 'dig +short '+ postfix_instance.MX.backup +' AAAA').splitlines() %}
- ![{{ ip }}]
-{%- endfor %}
- static:all
+postscreen_whitelist_interfaces = static:all
+
smtpd_client_restrictions =
permit_mynetworks
@@ -139,6 +143,7 @@ smtpd_helo_restrictions =
smtpd_sender_restrictions =
reject_non_fqdn_sender
+ reject_unknown_sender_domain
smtpd_relay_restrictions =
reject_non_fqdn_recipient
@@ -146,6 +151,14 @@ smtpd_relay_restrictions =
reject_unauth_destination
reject_unlisted_recipient
+smtpd_recipient_restrictions =
+ check_client_access cidr:$config_directory/access-list.cidr
+ check_recipient_access ldap:$config_directory/reject-unknown-client-hostname.cf
+ reject_rhsbl_reverse_client dbl.spamhaus.org=127.0.1.[2..99]
+ reject_rhsbl_sender dbl.spamhaus.org=127.0.1.[2..99]
+ defer_if_reject reject_rhsbl_reverse_client dbl.spamhaus.org=127.0.1.[100..254]
+ defer_if_reject reject_rhsbl_sender dbl.spamhaus.org=127.0.1.[100..254]
+
smtpd_data_restrictions =
reject_unauth_pipelining
diff --git a/roles/common/files/etc/logcheck/ignore.d.server/postfix-local b/roles/common/files/etc/logcheck/ignore.d.server/postfix-local
index 2ca704d..e32fce6 100644
--- a/roles/common/files/etc/logcheck/ignore.d.server/postfix-local
+++ b/roles/common/files/etc/logcheck/ignore.d.server/postfix-local
@@ -29,7 +29,10 @@
^\w{3} [ :[:digit:]]{11} [._[:alnum:]-]+ postfix-(msa|mx)/smtpd\[[[:digit:]]+\]: improper command pipelining after (EHLO|HELO|MAIL|QUIT) from [._[:alnum:]-]+\[[[:xdigit:].:]{3,39}\]:
^\w{3} [ :[:digit:]]{11} [._[:alnum:]-]+ postfix-(msa|mx)/smtpd\[[[:digit:]]+\]: warning: hostname [._[:alnum:]-]+ does not resolve to address [[:xdigit:].:]{3,39}(: Name or service not known)?$
^\w{3} [ :[:digit:]]{11} [._[:alnum:]-]+ postfix-mx/smtpd\[[[:digit:]]+\]: warning: Connection concurrency limit exceeded: [0-9]+ from [._[:alnum:]-]+\[[[:xdigit:].:]{3,39}\] for service smtpd$
-^\w{3} [ :[:digit:]]{11} [._[:alnum:]-]+ postfix-mx/smtpd\[[[:digit:]]+\]: NOQUEUE: reject: RCPT from [._[:alnum:]-]+\[[[:xdigit:].:]{3,39}\]: 5[[:digit:]]{2} 5(\.[[:digit:]]){2} <[^>]+>: Helo command rejected: need fully-qualified hostname;( from=<[^>]*> to=<[^>]+>)? proto=E?SMTP( helo=<[^>]+>)?
+^\w{3} [ :[:digit:]]{11} [._[:alnum:]-]+ postfix-mx/smtpd\[[[:digit:]]+\]: NOQUEUE: reject: RCPT from [._[:alnum:]-]+\[[[:xdigit:].:]{3,39}\]: 5[[:digit:]]{2} 5(\.[[:digit:]]){2} <[^>]+>: Helo command rejected: need fully-qualified hostname;( from=<[^>]*> to=<[^>]+>)? proto=E?SMTP( helo=<[^>]+>)?$
+^\w{3} [ :[:digit:]]{11} [._[:alnum:]-]+ postfix-mx/smtpd\[[[:digit:]]+\]: NOQUEUE: reject: RCPT from [._[:alnum:]-]+\[[[:xdigit:].:]{3,39}\]: 4[[:digit:]]{2} 4(\.[[:digit:]]){2} <[^>]+>: Sender address rejected: Domain not found;( from=<[^>]*> to=<[^>]+>)? proto=E?SMTP( helo=<[^>]+>)?$
+^\w{3} [ :[:digit:]]{11} [._[:alnum:]-]+ postfix-mx/smtpd\[[[:digit:]]+\]: NOQUEUE: reject: RCPT from [._[:alnum:]-]+\[[[:xdigit:].:]{3,39}\]: 5[[:digit:]]{2} 5(\.[[:digit:]]){2} Service unavailable; (Unverified Client host|Sender address) \[\S+\] blocked using [._[:alnum:]-]+; https?://[^[:blank:];]+; from=<[^>]*> to=<[^>]+> proto=E?SMTP( helo=<[^>]+>)?$
+^\w{3} [ :[:digit:]]{11} [._[:alnum:]-]+ postfix-mx/smtpd\[[[:digit:]]+\]: NOQUEUE: reject: RCPT from [._[:alnum:]-]+\[([[:xdigit:].:]{3,39})\]: 4[[:digit:]]{2} 4(\.[[:digit:]]){2} Client host rejected: cannot find your hostname, \[\1\]; from=<[^>]*> to=<[^>]+> proto=E?SMTP( helo=<[^>]+>)?$
^\w{3} [ :[:digit:]]{11} [._[:alnum:]-]+ postfix-(msa|mx)/smtpd\[[[:digit:]]+\]: timeout after [-[:upper:]]+( \([[:digit:]]+ bytes\))? from [^[:space:]]+$
^\w{3} [ :[:digit:]]{11} [._[:alnum:]-]+ postfix-((msa|mx)/smtpd|out/smtp)\[[[:digit:]]+\]: warning: (tls_text_name: [-._[:alnum:]]+\[[[:xdigit:].:]{3,39}\]: )?peer certificate has no (subject CN|issuer Organization)$
^\w{3} [ :[:digit:]]{11} [._[:alnum:]-]+ postfix-msa/smtpd\[[[:digit:]]+\]: (NOQUEUE|[[:xdigit:]]+): reject: [[:upper:]]+ from [^[:space:]]+: 450( 4\.1\.2)? <[^>]*>: Recipient address rejected: Domain not found;( from=<[^>]*> to=<[^>]+>)? proto=E?SMTP( helo=<[^[:space:]]+>)?$
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-22 10:22:14 +0000