Email

Налаштування Email-сервера

yum install postfix dovcote ntp
groupadd -g 1000 vmail
useradd -d /home/vmail/ -g 1000 -u 1000 vmail
mkdir /etc/postfix/certs
postmap /etc/postfix/transport 
openssl req -new -x509 -days 3650 -nodes -out /etc/postfix/certs/cert.pem -keyout /etc/postfix/certs/key.pem

Первірка портів

netstat -tup

Налаштування Postfix

main.cf:
queue_directory = /var/spool/postfix
command_directory = /usr/sbin
daemon_directory = /usr/libexec/postfix
data_directory = /var/lib/postfix
mail_owner = postfix
myhostname = mail.example.com
mydomain = example.com
inet_interfaces = all
inet_protocols = ipv4
mydestination = $myhostname, localhost.$mydomain, localhost
local_recipient_maps = unix:passwd.byname $alias_maps
transport_maps = hash:/etc/postfix/transport
virtual_mailbox_domains = partsbase.org
virtual_transport = dovecot
unknown_local_recipient_reject_code = 550
mynetworks_style = host
alias_maps = hash:/etc/aliases
alias_database = hash:/etc/aliases
mailbox_command = /usr/libexec/dovecot/deliver -f ${sender} -d ${recipient}
debug_peer_level = 2
debugger_command =
<--> PATH=/bin:/usr/bin:/usr/local/bin:/usr/X11R6/bin
<--> ddd $daemon_directory/$process_name $process_id & sleep 5
sendmail_path = /usr/sbin/sendmail.postfix
newaliases_path = /usr/bin/newaliases.postfix
mailq_path = /usr/bin/mailq.postfix
setgid_group = postdrop
html_directory = no
manpage_directory = /usr/share/man
sample_directory = /usr/share/doc/postfix-2.6.6/samples
readme_directory = /usr/share/doc/postfix-2.6.6/README_FILES
smtp_sasl_auth_enable = no
smtpd_sasl_auth_enable = yes
smtpd_sasl_type = dovecot
smtpd_sasl_path = private/auth
smtpd_sasl_security_options=noanonymous
smtpd_sasl_tls_security_options=$smtpd_sasl_security_options
smtp_sasl_mechanism_filter = !plain, static:rest
biff = no

# TLS
# ============================================================
smtp_tls_security_level = may
smtpd_tls_security_level = may
smtpd_tls_loglevel = 1
smtpd_tls_received_header = yes
smtpd_tls_session_cache_timeout = 3600s
smtp_tls_session_cache_database = btree:$data_directory/smtp_tls_session_cache
smtpd_tls_key_file = /etc/postfix/certs/key.pem
smtpd_tls_cert_file = /etc/postfix/certs/cert.pem
tls_random_source = dev:/dev/urandom

# RESTRICTIONS

smtpd_discard_ehlo_keywords = etrn, silent-discard
smtpd_forbidden_commands = CONNECT GET POST
broken_sasl_auth_clients = yes
smtpd_delay_reject = yes
smtpd_helo_required = yes
disable_vrfy_command = yes

smtpd_helo_restrictions = permit_mynetworks,
                          permit_sasl_authenticated,
                          reject_non_fqdn_helo_hostname,
                          reject_invalid_helo_hostname

smtpd_data_restrictions = permit_mynetworks,
                          permit_sasl_authenticated,
                          reject_unauth_pipelining,
                          reject_multi_recipient_bounce,

smtpd_sender_restrictions = permit_mynetworks,
                            permit_sasl_authenticated,
                            reject_non_fqdn_sender,
                            reject_unknown_sender_domain

smtpd_recipient_restrictions = reject_non_fqdn_recipient,
                               reject_unknown_recipient_domain,
                               reject_multi_recipient_bounce,
                               permit_mynetworks,
                               permit_sasl_authenticated,
                               reject_unauth_destination,
#                               check_policy_service unix:/var/spool/postfix/postgrey/socket,
                               #reject_rbl_client zen.spamhaus.org,
                               #reject_rbl_client bl.spamcop.net,
                               #reject_rbl_client dnsbl.sorbs.net,
                               reject_invalid_hostname