Setelah kita melihat konfigurasi-konfigurasi secara umum pada Postfix yang ada pada main server iRedMail maka kita akan melihat konfigurasi awal yang ada pada file main.cf. Kita perlu melihat seluruh isi main.cf supaya bisa melihat gambaran apa yang dikerjakan oleh Postfix ini.
Isi awal dari main.cf pada saat instalasi mail server iRedMail adalah seperti berikut ini:
# ——————–
# INSTALL-TIME CONFIGURATION INFORMATION
#
# location of the Postfix queue. Default is /var/spool/postfix.
queue_directory = /var/spool/postfix# location of all postXXX commands. Default is /usr/sbin.
command_directory = /usr/sbin# location of all Postfix daemon programs (i.e. programs listed in the
# master.cf file). This directory must be owned by root.
# Default is /usr/libexec/postfix
daemon_directory = /usr/libexec/postfix# location of Postfix-writable data files (caches, random numbers).
# This directory must be owned by the mail_owner account (see below).
# Default is /var/lib/postfix.
data_directory = /var/lib/postfix# owner of the Postfix queue and of most Postfix daemon processes.
# Specify the name of a user account THAT DOES NOT SHARE ITS USER OR GROUP ID
# WITH OTHER ACCOUNTS AND THAT OWNS NO OTHER FILES OR PROCESSES ON THE SYSTEM.
# In particular, don’t specify nobody or daemon. PLEASE USE A DEDICATED USER.
# Default is postfix.
mail_owner = postfix# The following parameters are used when installing a new Postfix version.
#
# sendmail_path: The full pathname of the Postfix sendmail command.
# This is the Sendmail-compatible mail posting interface.
#
sendmail_path = /usr/sbin/sendmail.postfix# newaliases_path: The full pathname of the Postfix newaliases command.
# This is the Sendmail-compatible command to build alias databases.
#
newaliases_path = /usr/bin/newaliases.postfix# full pathname of the Postfix mailq command. This is the Sendmail-compatible
# mail queue listing command.
mailq_path = /usr/bin/mailq.postfix# group for mail submission and queue management commands.
# This must be a group name with a numerical group ID that is not shared with
# other accounts, not even with the Postfix account.
setgid_group = postdrop# external command that is executed when a Postfix daemon program is run with
# the -D option.
#
# Use “command .. & sleep 5” so that the debugger can attach before
# the process marches on. If you use an X-based debugger, be sure to
# set up your XAUTHORITY environment variable before starting Postfix.
#
debugger_command =
PATH=/bin:/usr/bin:/usr/local/bin:/usr/X11R6/bin
ddd $daemon_directory/$process_name $process_id & sleep 5debug_peer_level = 2
# ——————–
# CUSTOM SETTINGS
## SMTP server response code when recipient or domain not found.
unknown_local_recipient_reject_code = 550# Do not notify local user.
biff = no# Disable the rewriting of “site!user” into “user@site”.
swap_bangpath = no# Disable the rewriting of the form “user%domain” to “user@domain”.
allow_percent_hack = no# Allow recipient address start with ‘-‘.
allow_min_user = no# Disable the SMTP VRFY command. This stops some techniques used to
# harvest email addresses.
disable_vrfy_command = yes# Enable both IPv4 and/or IPv6: ipv4, ipv6, all.
inet_protocols = all# Enable all network interfaces.
inet_interfaces = all#
# TLS settings.
#
# SSL key, certificate, CA
#
smtpd_tls_key_file = /etc/pki/tls/private/iRedMail.key
smtpd_tls_cert_file = /etc/pki/tls/certs/iRedMail.crt
smtpd_tls_CAfile = /etc/pki/tls/certs/iRedMail.crt
smtpd_tls_CApath = /etc/pki/tls/certs#
# Disable SSLv2, SSLv3
#
smtpd_tls_protocols = !SSLv2 !SSLv3
smtpd_tls_mandatory_protocols = !SSLv2 !SSLv3
smtp_tls_protocols = !SSLv2 !SSLv3
smtp_tls_mandatory_protocols = !SSLv2 !SSLv3
lmtp_tls_protocols = !SSLv2 !SSLv3
lmtp_tls_mandatory_protocols = !SSLv2 !SSLv3#
# Fix ‘The Logjam Attack’.
#
smtpd_tls_exclude_ciphers = aNULL, eNULL, EXPORT, DES, RC4, MD5, PSK, aECDH, EDH-DSS-DES-CBC3-SHA, EDH-RSA-DES-CDC3-SHA, KRB5-DE5, CBC3-SHA
smtpd_tls_dh512_param_file = /etc/pki/tls/dh512_param.pem
smtpd_tls_dh1024_param_file = /etc/pki/tls/dh2048_param.pemtls_random_source = dev:/dev/urandom
# Log only a summary message on TLS handshake completion — no logging of client
# certificate trust-chain verification errors if client certificate
# verification is not required. With Postfix 2.8 and earlier, log the summary
# message, peer certificate summary information and unconditionally log
# trust-chain verification errors.
smtp_tls_loglevel = 1
smtpd_tls_loglevel = 1# Opportunistic TLS: announce STARTTLS support to remote SMTP clients, but do
# not require that clients use TLS encryption.
smtpd_tls_security_level = may# Produce `Received:` message headers that include information about the
# protocol and cipher used, as well as the remote SMTP client CommonName and
# client certificate issuer CommonName.
# This is disabled by default, as the information may be modified in transit
# through other mail servers. Only information that was recorded by the final
# destination can be trusted.
#smtpd_tls_received_header = yes# Opportunistic TLS, used when Postfix sends email to remote SMTP server.
# Use TLS if this is supported by the remote SMTP server, otherwise use
# plaintext.
# References:
# – http://www.postfix.org/TLS_README.html#client_tls_may
# – http://www.postfix.org/postconf.5.html#smtp_tls_security_level
smtp_tls_security_level = may# Use the same CA file as smtpd.
smtp_tls_CApath = /etc/pki/tls/certs
smtp_tls_CAfile = $smtpd_tls_CAfile
smtp_tls_note_starttls_offer = yes# Enable long, non-repeating, queue IDs (queue file names).
# The benefit of non-repeating names is simpler logfile analysis and easier
# queue migration (there is no need to run “postsuper” to change queue file
# names that don’t match their message file inode number).
enable_long_queue_ids = yes# Reject unlisted sender and recipient
smtpd_reject_unlisted_recipient = yes
smtpd_reject_unlisted_sender = yes# Header and body checks with PCRE table
header_checks = pcre:/etc/postfix/header_checks
body_checks = pcre:/etc/postfix/body_checks.pcre# A mechanism to transform commands from remote SMTP clients.
# This is a last-resort tool to work around client commands that break
# interoperability with the Postfix SMTP server. Other uses involve fault
# injection to test Postfix’s handling of invalid commands.
# Requires Postfix-2.7+.
smtpd_command_filter = pcre:/etc/postfix/command_filter.pcre# HELO restriction
smtpd_helo_required = yes
smtpd_helo_restrictions =
permit_mynetworks
permit_sasl_authenticated
check_helo_access pcre:/etc/postfix/helo_access.pcre
reject_non_fqdn_helo_hostname
reject_unknown_helo_hostname# Sender restrictions
smtpd_sender_restrictions =
reject_unknown_sender_domain
reject_non_fqdn_sender
reject_unlisted_sender
permit_mynetworks
permit_sasl_authenticated
check_sender_access pcre:/etc/postfix/sender_access.pcre# Recipient restrictions
smtpd_recipient_restrictions =
reject_non_fqdn_recipient
reject_unlisted_recipient
check_policy_service inet:127.0.0.1:7777
permit_mynetworks
permit_sasl_authenticated
reject_unauth_destination# END-OF-MESSAGE restrictions
smtpd_end_of_data_restrictions =
check_policy_service inet:127.0.0.1:7777# Data restrictions
smtpd_data_restrictions = reject_unauth_pipelining# SRS (Sender Rewriting Scheme) support
#sender_canonical_maps = tcp:127.0.0.1:7778
#sender_canonical_classes = envelope_sender
#recipient_canonical_maps = tcp:127.0.0.1:7779
#recipient_canonical_classes= envelope_recipient,header_recipientproxy_read_maps = $canonical_maps $lmtp_generic_maps $local_recipient_maps $mydestination $mynetworks $recipient_bcc_maps $recipient_canonical_maps $relay_domains $relay_recipient_maps $relocated_maps $sender_bcc_maps $sender_canonical_maps $smtp_generic_maps $smtpd_sender_login_maps $transport_maps $virtual_alias_domains $virtual_alias_maps $virtual_mailbox_domains $virtual_mailbox_maps $smtpd_sender_restrictions $sender_dependent_relayhost_maps
# Avoid duplicate recipient messages. Default is ‘yes’.
enable_original_recipient = no# Virtual support.
virtual_minimum_uid = 2000
virtual_uid_maps = static:2000
virtual_gid_maps = static:2000
virtual_mailbox_base = /var/vmail# Do not set virtual_alias_domains.
virtual_alias_domains =#
# Enable SASL authentication on port 25 and force TLS-encrypted SASL authentication.
# WARNING: NOT RECOMMENDED to enable smtp auth on port 25, all end users should
# be forced to submit email through port 587 instead.
#
#smtpd_sasl_auth_enable = yes
#smtpd_sasl_security_options = noanonymous
#smtpd_tls_auth_only = yes# hostname
myhostname = firstdomain
myorigin = firstdomain
mydomain = firstdomain# trusted SMTP clients which are allowed to relay mail through Postfix.
#
# Note: additional IP addresses/networks listed in mynetworks should be listed
# in iRedAPD setting ‘MYNETWORKS’ (in `/opt/iredapd/settings.py`) too.
# for example:
#
# MYNETWORKS = [‘xx.xx.xx.xx’, ‘xx.xx.xx.0/24’, …]
#
mynetworks = 127.0.0.1 [::1]# Accepted local emails
mydestination = $myhostname, localhost, localhost.localdomainalias_maps = hash:/etc/postfix/aliases
alias_database = hash:/etc/postfix/aliases# Default message_size_limit.
message_size_limit = 15728640# The set of characters that can separate a user name from its extension
# (example: user+foo), or a .forward file name from its extension (example:
# .forward+foo).
# Postfix 2.11 and later supports multiple characters.
recipient_delimiter = +# The time after which the sender receives a copy of the message headers of
# mail that is still queued. Default setting is disabled (0h) by Postfix.
#delay_warning_time = 1h
#
# Lookup virtual mail accounts
#
transport_maps =
proxy:mysql:/etc/postfix/mysql/transport_maps_user.cf
proxy:mysql:/etc/postfix/mysql/transport_maps_maillist.cf
proxy:mysql:/etc/postfix/mysql/transport_maps_domain.cfsender_dependent_relayhost_maps =
proxy:mysql:/etc/postfix/mysql/sender_dependent_relayhost_maps.cf# Lookup table with the SASL login names that own the sender (MAIL FROM) addresses.
smtpd_sender_login_maps =
proxy:mysql:/etc/postfix/mysql/sender_login_maps.cfvirtual_mailbox_domains =
proxy:mysql:/etc/postfix/mysql/virtual_mailbox_domains.cfrelay_domains =
$mydestination
proxy:mysql:/etc/postfix/mysql/relay_domains.cfvirtual_mailbox_maps =
proxy:mysql:/etc/postfix/mysql/virtual_mailbox_maps.cfvirtual_alias_maps =
proxy:mysql:/etc/postfix/mysql/virtual_alias_maps.cf
proxy:mysql:/etc/postfix/mysql/domain_alias_maps.cf
proxy:mysql:/etc/postfix/mysql/catchall_maps.cf
proxy:mysql:/etc/postfix/mysql/domain_alias_catchall_maps.cfsender_bcc_maps =
proxy:mysql:/etc/postfix/mysql/sender_bcc_maps_user.cf
proxy:mysql:/etc/postfix/mysql/sender_bcc_maps_domain.cfrecipient_bcc_maps =
proxy:mysql:/etc/postfix/mysql/recipient_bcc_maps_user.cf
proxy:mysql:/etc/postfix/mysql/recipient_bcc_maps_domain.cf#
# Postscreen
#
postscreen_greet_action = drop
postscreen_blacklist_action = drop
postscreen_dnsbl_action = drop
postscreen_dnsbl_threshold = 2# Attention:
# – zen.spamhaus.org free tire has 3 limits
# (https://www.spamhaus.org/organization/dnsblusage/):
#
# 1) Your use of the Spamhaus DNSBLs is non-commercial*, and
# 2) Your email traffic is less than 100,000 SMTP connections per day, and
# 3) Your DNSBL query volume is less than 300,000 queries per day.
#
# – FAQ: “Your DNSBL blocks nothing at all!”
# https://www.spamhaus.org/faq/section/DNSBL%20Usage#261
#
# It’s strongly recommended to use a local DNS server for cache.
postscreen_dnsbl_sites =
zen.spamhaus.org=127.0.0.[2..11]*3
b.barracudacentral.org=127.0.0.2*2postscreen_dnsbl_reply_map = texthash:/etc/postfix/postscreen_dnsbl_reply
postscreen_access_list = permit_mynetworks cidr:/etc/postfix/postscreen_access.cidr# Require Postfix-2.11+
#postscreen_dnsbl_whitelist_threshold = -2
#
# Dovecot SASL support.
#
smtpd_sasl_type = dovecot
smtpd_sasl_path = private/dovecot-auth
virtual_transport = dovecot
dovecot_destination_recipient_limit = 1#
# mlmmj – mailing list manager
#
mlmmj_destination_recipient_limit = 1#
# Amavisd + SpamAssassin + ClamAV
#
content_filter = smtp-amavis:[127.0.0.1]:10024# Concurrency per recipient limit.
smtp-amavis_destination_recipient_limit = 1
Note: ganti firstdomain dengan first domain yang anda gunakan.
Kunjungi www.proweb.co.id untuk menambah wawasan anda.