Hello,
I have inherited a bit confusing for me postfix configuration and I am hoping to get some help from you guys, as I am really stuck.
I have two postfix servers (for ha), each with several postfix instances. Few weeks ago I had to add two policyd servers (on separate VMs) which are responsible for throttling outbound emails in case someone decides to abuse my servers or if some account gets hacked.
Since I have internal emails without authentication and other emails after Amavis which are being whitelisted after confirmed they are not spam, I need to forward/relay only emails that are authenticated. Nothing else.
Not sure what details should I provide, so I am going to paste configuration I think is relevant. Please let me know what else you might need.
This is /etc/postfix/master.cf
Code:
#
# Postfix master process configuration file. For details on the format
# of the file, see the Postfix master(5) manual page.
#
# ==========================================================================
# service type private unpriv chroot wakeup maxproc command + args
# (yes) (yes) (yes) (never) (100)
# ==========================================================================
# Incoming from trusted
# Incoming from truested nets
smtp inet n - - - - smtpd
-o smtpd_helo_restrictions=
-o smtpd_client_restrictions=
-o smtpd_sender_restrictions=
-o smtpd_recipient_restrictions=insiders,permit_sasl_authenticated,permit_mynetworks,reject
# Incoming from auth users
10127 inet n - - - - smtpd
-o smtpd_helo_restrictions=
-o smtpd_client_restrictions=
-o smtpd_sender_restrictions=
-o smtpd_recipient_restrictions=insiders,permit_sasl_authenticated,reject
# Incoming from amavis (this is forwarded mail, we dont do whitelisting here)
10128 inet n - - - - smtpd
-o smtpd_helo_restrictions=
-o smtpd_client_restrictions=
-o smtpd_sender_restrictions=
-o smtpd_recipient_restrictions=permit_mynetworks,reject
# whitelist outgoing mail
whitelist unix - n n - - spawn
user=nobody argv=/usr/bin/perl /usr/lib/postfix/whitelist_sasl.pl
#smtps inet n - - - - smtpd
# -o smtpd_tls_wrappermode=yes -o smtpd_sasl_auth_enable=yes
#submission inet n - - - - smtpd
# -o smtpd_etrn_restrictions=reject
# -o smtpd_enforce_tls=yes -o smtpd_sasl_auth_enable=yes
#628 inet n - - - - qmqpd
pickup fifo n - - 60 1 pickup
cleanup unix n - - - 0 cleanup
qmgr fifo n - n 300 1 qmgr
#qmgr fifo n - - 300 1 oqmgr
tlsmgr unix - - - 1000? 1 tlsmgr
rewrite unix - - - - - trivial-rewrite
bounce unix - - - - 0 bounce
defer unix - - - - 0 bounce
trace unix - - - - 0 bounce
verify unix - - - - 1 verify
flush unix n - - 1000? 0 flush
proxymap unix - - n - - proxymap
smtp unix - - - - - smtp
# When relaying mail as backup MX, disable fallback_relay to avoid MX loops
relay unix - - - - - smtp
-o fallback_relay=
# -o smtp_helo_timeout=5 -o smtp_connect_timeout=5
showq unix n - - - - showq
error unix - - - - - error
discard unix - - - - - discard
local unix - n n - - local
virtual unix - n n - - virtual
lmtp unix - - - - - lmtp
anvil unix - - - - 1 anvil
scache unix - - - - 1 scache
# Vacations
vacation unix - n n - - pipe
flags=DRhu user=vacation argv=/var/spool/vacation/vacation.pl
#
# ====================================================================
# Interfaces to non-Postfix software. Be sure to examine the manual
# pages of the non-Postfix software to find out what options it wants.
#
# Many of the following services use the Postfix pipe(8) delivery
# agent. See the pipe(8) man page for information about ${recipient}
# and other message envelope options.
# ====================================================================
#
# maildrop. See the Postfix MAILDROP_README file for details.
# Also specify in main.cf: maildrop_destination_recipient_limit=1
#
maildrop unix - n n - - pipe
flags=DRhu user=vmail argv=/usr/bin/maildrop /srv/mail/${nexthop}/${user}/mailfilter
#
# See the Postfix UUCP_README file for configuration details.
#
uucp unix - n n - - pipe
flags=Fqhu user=uucp argv=uux -r -n -z -a$sender - $nexthop!rmail ($recipient)
#
# Other external delivery methods.
#
ifmail unix - n n - - pipe
flags=F user=ftn argv=/usr/lib/ifmail/ifmail -r $nexthop ($recipient)
bsmtp unix - n n - - pipe
flags=Fq. user=bsmtp argv=/usr/lib/bsmtp/bsmtp -t$nexthop -f$sender $recipient
scalemail-backend unix - n n - 2 pipe
flags=R user=scalemail argv=/usr/lib/scalemail/bin/scalemail-store ${nexthop} ${user} ${extension}
mailman unix - n n - - pipe
flags=FR user=list argv=/usr/lib/mailman/bin/postfix-to-mailman.py
${nexthop} ${user}
/etc/postfix2/master.cf
Code:
#
# Postfix master process configuration file. For details on the format
# of the file, see the Postfix master(5) manual page.
#
# ==========================================================================
# service type private unpriv chroot wakeup maxproc command + args
# (yes) (yes) (yes) (never) (100)
# ==========================================================================
# Incoming from inet
10125 inet n - - - - smtpd
-o content_filter=smtp-amavis:[127.0.0.1]:10040
-o receive_override_options=no_address_mappings
# Run another smtpd that receives scanned incoming mails
10126 inet n - - - - smtpd
-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_style=host
-o smtpd_authorized_xforward_hosts=127.0.0.0/8,192.168.19.13,192.168.6.7
# Greylist policy
#greylist unix - n n - - spawn
# user=nobody argv=/usr/bin/perl /usr/lib/postfix/greylist.pl
# Run lmtp that will fwrd traffic to amavis
smtp-amavis unix - - n - 10 lmtp
-o lmtp_data_done_timeout=1200
-o disable_dns_lookups=yes
-o lmtp_send_xforward_command=yes
#smtps inet n - - - - smtpd
# -o smtpd_tls_wrappermode=yes -o smtpd_sasl_auth_enable=yes
#submission inet n - - - - smtpd
# -o smtpd_etrn_restrictions=reject
# -o smtpd_enforce_tls=yes -o smtpd_sasl_auth_enable=yes
#628 inet n - - - - qmqpd
pickup fifo n - - 60 1 pickup
-o content_filter=
-o receive_override_options=no_header_body_checks
cleanup unix n - - - 0 cleanup
qmgr fifo n - n 300 1 qmgr
#qmgr fifo n - - 300 1 oqmgr
tlsmgr unix - - - 1000? 1 tlsmgr
rewrite unix - - - - - trivial-rewrite
bounce unix - - - - 0 bounce
defer unix - - - - 0 bounce
trace unix - - - - 0 bounce
verify unix - - - - 1 verify
flush unix n - - 1000? 0 flush
proxymap unix - - n - - proxymap
smtp unix - - - - - smtp
# When relaying mail as backup MX, disable fallback_relay to avoid MX loops
relay unix - - - - - smtp
-o fallback_relay=
# -o smtp_helo_timeout=5 -o smtp_connect_timeout=5
showq unix n - - - - showq
error unix - - - - - error
discard unix - - - - - discard
local unix - n n - - local
virtual unix - n n - - virtual
lmtp unix - - - - - lmtp
anvil unix - - - - 1 anvil
scache unix - - - - 1 scache
# Vacations
vacation unix - n n - - pipe
flags=DRhu user=vacation argv=/var/spool/vacation/vacation.pl
#
# ====================================================================
# Interfaces to non-Postfix software. Be sure to examine the manual
# pages of the non-Postfix software to find out what options it wants.
#
# Many of the following services use the Postfix pipe(8) delivery
# agent. See the pipe(8) man page for information about ${recipient}
# and other message envelope options.
# ====================================================================
#
# maildrop. See the Postfix MAILDROP_README file for details.
# Also specify in main.cf: maildrop_destination_recipient_limit=1
#
maildrop unix - n n - - pipe
flags=DRhu user=vmail argv=/usr/bin/maildrop /srv/mail/${nexthop}/${user}/mailfilter
#
# See the Postfix UUCP_README file for configuration details.
#
uucp unix - n n - - pipe
flags=Fqhu user=uucp argv=uux -r -n -z -a$sender - $nexthop!rmail ($recipient)
#
# Other external delivery methods.
#
ifmail unix - n n - - pipe
flags=F user=ftn argv=/usr/lib/ifmail/ifmail -r $nexthop ($recipient)
bsmtp unix - n n - - pipe
flags=Fq. user=bsmtp argv=/usr/lib/bsmtp/bsmtp -t$nexthop -f$sender $recipient
scalemail-backend unix - n n - 2 pipe
flags=R user=scalemail argv=/usr/lib/scalemail/bin/scalemail-store ${nexthop} ${user} ${extension}
mailman unix - n n - - pipe
flags=FR user=list argv=/usr/lib/mailman/bin/postfix-to-mailman.py
${nexthop} ${user}
postconf -n for /etc/postfix2
Code:
alias_database = hash:/etc/aliases
alias_maps = hash:/etc/aliases
allow_untrusted_routing = no
append_dot_mydomain = no
biff = no
broken_sasl_auth_clients = yes
config_directory = /etc/postfix2/
default_rbl_reply = $rbl_code Service unavailable; $rbl_class [$rbl_what] blocked using $rbl_domain${rbl_reason?; $rbl_reason}
default_transport = lmtp:[127.0.0.1]:10041
disable_dns_lookups = no
disable_vrfy_command = yes
inet_interfaces = all
message_size_limit = 20480000
mydestination = $myhostname, vm-mail1.ba.nc, localhost.ba.nc, localhost
myhostname = mx4.foo.net
mynetworks = 127.0.0.0/8, 192.168.8.0/24, 192.168.19.0/24, 192.168.6.0/24
myorigin = /etc/mailname
parent_domain_matches_subdomains =
queue_directory = /var/spool/postfix2
recipient_delimiter = +
relay_domains = proxy:mysql:/etc/postfix/mysql_relay_domains_maps.cf
relayhost =
smtp_always_send_ehlo = yes
smtp_tls_note_starttls_offer = yes
smtp_tls_session_cache_database = btree:${queue_directory}/smtp_scache
smtpd_banner = $myhostname ESMTP $mail_name (Ubuntu)
smtpd_discard_ehlo_keywords = silent-discard, dsn
smtpd_hard_error_limit = 20
smtpd_helo_required = yes
smtpd_helo_restrictions = reject_invalid_hostname, permit_mynetworks, permit
smtpd_recipient_restrictions = permit_mynetworks, permit_sasl_authenticated, reject_unauth_destination, check_sender_access mysql:/etc/postfix/mysql_check_sender_access.cf, reject_non_fqdn_recipient, reject_unauth_pipelining, reject_non_fqdn_sender, reject_unknown_sender_domain, reject_unknown_recipient_domain, reject_rbl_client zen.spamhaus.org, reject_rbl_client b.barracudacentral.org, reject_rbl_client bl.spamcop.net reject_rbl_client sip.invaluement.local reject_rbl_client sip24.invaluement.local check_policy_service inet:127.0.0.1:60000 permit
smtpd_restriction_classes = insiders
smtpd_sasl_auth_enable = yes
smtpd_sasl_local_domain =
smtpd_sasl_security_options = noanonymous
smtpd_sender_restrictions = permit_sasl_authenticated, permit_mynetworks, reject_unknown_sender_domain, reject_non_fqdn_sender, permit
smtpd_soft_error_limit = 10
smtpd_tls_CAfile = /etc/postfix/ssl/cacert.pem
smtpd_tls_auth_only = no
smtpd_tls_cert_file = /etc/postfix/ssl/smtpd.crt
smtpd_tls_key_file = /etc/postfix/ssl/smtpd.key
smtpd_tls_loglevel = 1
smtpd_tls_received_header = yes
smtpd_tls_session_cache_database = btree:${queue_directory}/smtpd_scache
smtpd_tls_session_cache_timeout = 3600s
smtpd_use_tls = yes
strict_8bitmime = no
strict_8bitmime_body = no
syslog_name = postfix2
tls_random_source = dev:/dev/urandom
transport_maps = hash:/etc/postfix/transport
virtual_alias_domains = mysql:/etc/postfix/mysql_virtual_domains_alias.cf
virtual_alias_maps = pcre:/etc/postfix/virtual, mysql:/etc/postfix/mysql_virtual_alias_maps.cf, mysql:/etc/postfix/mysql_virtual_domain_alias_maps.cf
virtual_create_maildirsize = yes
virtual_gid_maps = static:8
virtual_mailbox_base = /srv/mail
virtual_mailbox_domains = mysql:/etc/postfix/mysql_virtual_domains_maps.cf
virtual_mailbox_limit_maps = mysql:/etc/postfix/mysql_virtual_mailbox_limit_maps.cf
virtual_mailbox_limit_override = yes
virtual_mailbox_maps = mysql:/etc/postfix/mysql_virtual_mailbox_maps.cf
virtual_maildir_limit_message = The user you are trying to reach is over quota.
virtual_minimum_uid = 100
virtual_overquota_bounce = yes
virtual_transport = virtual
virtual_uid_maps = static:108
And postconf -n from /etc/postfix
Code:
alias_database = hash:/etc/aliases
alias_maps = hash:/etc/aliases
allow_untrusted_routing = no
alternate_config_directories = /etc/postfix2
append_dot_mydomain = no
biff = no
broken_sasl_auth_clients = yes
config_directory = /etc/postfix
default_rbl_reply = $rbl_code Service unavailable; $rbl_class [$rbl_what] blocked using $rbl_domain${rbl_reason?; $rbl_reason}
disable_dns_lookups = no
disable_vrfy_command = yes
fallback_relay = vm-policyd2.ba.nc
inet_interfaces = all
message_size_limit = 20480000
mydestination = $myhostname, vm-mail1.ba.nc, localhost.ba.nc, localhost
myhostname = mx4.foo.net
mynetworks = 127.0.0.0/8, 192.168.8.0/24, 192.168.10.0/24
myorigin = /etc/mailname
parent_domain_matches_subdomains =
recipient_delimiter = +
relay_domains = proxy:mysql:/etc/postfix/mysql_relay_domains_maps.cf
relayhost = vm-policyd1.ba.nc
smtp_always_send_ehlo = yes
smtp_tls_note_starttls_offer = yes
smtp_tls_session_cache_database = btree:${queue_directory}/smtp_scache
smtpd_banner = $myhostname ESMTP $mail_name (Ubuntu)
smtpd_hard_error_limit = 20
smtpd_helo_required = yes
smtpd_helo_restrictions = reject_invalid_hostname, permit_mynetworks, permit
smtpd_recipient_restrictions = permit_mynetworks, permit_sasl_authenticated, reject_unauth_destination, check_sender_access mysql:/etc/postfix/mysql_check_sender_access.cf, reject_non_fqdn_recipient, reject_unauth_pipelining, reject_non_fqdn_sender, reject_unknown_sender_domain, reject_unknown_recipient_domain, reject_rbl_client zen.spamhaus.org, permit
smtpd_restriction_classes = insiders
smtpd_sasl_auth_enable = yes
smtpd_sasl_local_domain =
smtpd_sasl_security_options = noanonymous
smtpd_sender_restrictions = permit_sasl_authenticated, permit_mynetworks, reject_unknown_sender_domain, reject_non_fqdn_sender, permit
smtpd_soft_error_limit = 10
smtpd_tls_CAfile = /etc/postfix/ssl/foo.net.pem
smtpd_tls_auth_only = no
smtpd_tls_cert_file = /etc/postfix/ssl/foo.net.crt
smtpd_tls_key_file = /etc/postfix/ssl/foo.net.key
smtpd_tls_loglevel = 1
smtpd_tls_received_header = yes
smtpd_tls_session_cache_database = btree:${queue_directory}/smtpd_scache
smtpd_tls_session_cache_timeout = 3600s
smtpd_use_tls = yes
strict_8bitmime = no
strict_8bitmime_body = no
tls_random_source = dev:/dev/urandom
transport_maps = hash:/etc/postfix/transport
virtual_alias_domains = mysql:/etc/postfix/mysql_virtual_domains_alias.cf
virtual_alias_maps = pcre:/etc/postfix/virtual, mysql:/etc/postfix/mysql_virtual_alias_maps.cf, mysql:/etc/postfix/mysql_virtual_domain_alias_maps.cf
virtual_create_maildirsize = yes
virtual_gid_maps = static:8
virtual_mailbox_base = /srv/mail
virtual_mailbox_domains = mysql:/etc/postfix/mysql_virtual_domains_maps.cf
virtual_mailbox_limit_maps = mysql:/etc/postfix/mysql_virtual_mailbox_limit_maps.cf
virtual_mailbox_limit_override = yes
virtual_mailbox_maps = mysql:/etc/postfix/mysql_virtual_mailbox_maps.cf
virtual_maildir_limit_message = The user you are trying to reach is over quota.
virtual_minimum_uid = 100
virtual_overquota_bounce = yes
virtual_transport = virtual
virtual_uid_maps = static:108
