Install Postfix di Centos 6.5

Install Postfix dan Cyrus
yum install postfix
yum install cyrus-sasl
yum install cyrus-imapd


Replace file main.cf
vi /etc/postfix/main.cf

soft_bounce             = no
queue_directory         = /var/spool/postfix
command_directory       = /usr/sbin
daemon_directory        = /usr/libexec/postfix
mail_owner              = postfix

# The default_privs parameter specifies the default rights used by
# the local delivery agent for delivery to external file or command.
# These rights are used in the absence of a recipient user context.
# DO NOT SPECIFY A PRIVILEGED USER OR THE POSTFIX OWNER.
#
#default_privs = nobody

myhostname              = mail.example.com
mydomain                = example.com

mydestination           = $myhostname, localhost
unknown_local_recipient_reject_code = 550

mynetworks_style        = host
mailbox_transport       = lmtp:unix:/var/lib/imap/socket/lmtp
local_destination_recipient_limit       = 300
local_destination_concurrency_limit     = 5
recipient_delimiter=+

virtual_alias_maps      = hash:/etc/postfix/virtual

header_checks           = regexp:/etc/postfix/header_checks
mime_header_checks      = pcre:/etc/postfix/body_checks
smtpd_banner            = $myhostname

debug_peer_level        = 2
debugger_command =
         PATH=/bin:/usr/bin:/usr/bin:/usr/X11R6/bin
         xxgdb $daemon_directory/$process_name $process_id & sleep 5

sendmail_path           = /usr/sbin/sendmail.postfix
newaliases_path         = /usr/bin/newaliases.postfix
mailq_path              = /usr/bin/mailq.postfix
setgid_group            = postdrop
html_directory          = no
manpage_directory       = /usr/share/man
sample_directory        = /usr/share/doc/postfix-2.3.3/samples
readme_directory        = /usr/share/doc/postfix-2.3.3/README_FILES

smtpd_sasl_auth_enable          = yes
smtpd_sasl_application_name     = smtpd
smtpd_recipient_restrictions    = permit_sasl_authenticated,
                                  permit_mynetworks,
                                  reject_unauth_destination,
                                  reject_invalid_hostname,
                                  reject_non_fqdn_hostname,
                                  reject_non_fqdn_sender,
                                  reject_non_fqdn_recipient,
                                  reject_unknown_sender_domain,
                                  reject_unknown_recipient_domain,
                                  reject_unauth_pipelining,
                                  reject_rbl_client zen.spamhaus.org,
                                  reject_rbl_client bl.spamcop.net,
                                  reject_rbl_client dnsbl.njabl.org,
                                  reject_rbl_client dnsbl.sorbs.net,
                                  permit

smtpd_sasl_security_options     = noanonymous
smtpd_sasl_local_domain         =
broken_sasl_auth_clients        = yes

smtpd_helo_required             = yes

Ganti example.com dengan nama domain anda.

Replace file virtual
vi /etc/postfix/virtual

user@example.com   user\@example.com

postmap /etc/postfix/virtual
touch /etc/postfix/body_checks

Setting cyrus nya
vi /etc/sasl2/smtpd.conf

pwcheck_method: auxprop
auxprop_plugin: sasldb
mech_list: PLAIN LOGIN CRAM-MD5 DIGEST-MD5

vi  /etc/imapd.conf

virtdomains:        userid
defaultdomain:        example.com
servername:        example.com
configdirectory:    /var/lib/imap
partition-default:    /var/spool/imap
admins:            cyrus
sievedir:        /var/lib/imap/sieve
sendmail:        /usr/sbin/sendmail.postfix
hashimapspool:        true
allowanonymouslogin:    no
allowplaintext:        yes
sasl_pwcheck_method:    auxprop
sasl_mech_list:        CRAM-MD5 DIGEST-MD5 PLAIN
tls_cert_file:        /etc/pki/cyrus-imapd/cyrus-imapd.pem
tls_key_file:        /etc/pki/cyrus-imapd/cyrus-imapd.pem
tls_ca_file:        /etc/pki/tls/certs/ca-bundle.crt

autocreatequota:        -1
createonpost:            yes
autocreateinboxfolders:        spam
autosubscribeinboxfolders:    spam

 Sesuiakan example.com dengan nama domain anda.

Ubah nama hostname
vi /etc/hosts

# Hostname
1.2.3.4 example.com example.com  example

vi /etc/sysconfig/network

HOSTNAME="example.com"

Install mail Client
yum install mailx


Cara test send email dengan command berikut
mail user@example.com

Tambahan:
Port 25 Centos Up di Localhost Down di Public VPS
Edit
vi /etc/mail/sendmail.mc
di Baris
DAEMON_OPTIONS(`Port=smtp,Addr=127.0.0.1, Name=MTA')dnl

Disable kan, jadi
dnl #DAEMON_OPTIONS(`Port=smtp,Addr=127.0.0.1, Name=MTA')dnl

Save dan restart service sendmail
service sendmail restart