Postfix¶

Instalación¶

sudo apt-get install postfix sasl2-bin dovecot-common dovecot-pop3d dovecot-imapd

Postfix¶

Durante la instalación cuando pregunte por el certificado SSL, decir que no.
Después darle a <ok>
Por ultimo, No configuration

sudo cp /usr/lib/postfix/main.cf /etc/postfix/main.cf

sudo vim /etc/postfix/main.cf

# line 59: uncomment
mail_owner = postfix

# line 76: uncomment and specify hostname
myhostname = mail.workspace.local

# line 83: uncomment and specify domain name
mydomain = workspace.local

# line 104: uncomment
myorigin = $mydomain

# line 118: uncomment
inet_interfaces = all

# line 166: uncomment
mydestination = $myhostname, localhost.$mydomain, localhost, $mydomain

# line 209: uncomment
local_recipient_maps = unix:passwd.byname $alias_maps

# line 268: uncomment and specify your LAN
mynetworks = 192.168.0.0/24, 127.0.0.0/16

# line 388: uncomment
alias_maps = hash:/etc/aliases

# line 399: uncomment
alias_database = hash:/etc/aliases

# line 421: uncomment (use Maildir)
home_mailbox = Maildir/

# line 531: uncomment
header_checks = regexp:/etc/postfix/header_checks

# add: mail body checking
body_checks = regexp:/etc/postfix/body_checks

# line 557: make it comment and add below
# smtpd_banner = $myhostname ESMTP $mail_name (@@DISTRO@@)
smtpd_banner = $myhostname ESMTP

# line 631: add
sendmail_path = /usr/sbin/postfix

# line 636: add
newaliases_path = /usr/bin/newaliases

# line 641: add
mailq_path = /usr/bin/mail

# line 647: add
setgid_group = postdrop

# line 651: make it comment
# html_directory =

# line 655: make it comment
# manpage_directory =

# line 660: make it comment
# sample_directory

# line 664: make it comment
# readme_directory =

# add at the lasdt line:
# limit an email size 10M
message_size_limit = 10485760

# limit mailbox 1G
mailbox_size_limit = 1073741824
# for SMTP-Auth settings

smtpd_sasl_type = dovecot
smtpd_sasl_path = private/auth
smtpd_sasl_auth_enable = yes
smtpd_sasl_security_options = noanonymous
smtpd_sasl_local_domain = $myhostname
smtpd_client_restrictions = permit_mynetworks,reject_unknown_client,permit
smtpd_recipient_restrictions = permit_mynetworks,permit_auth_destination,permit_sasl_authenticated,reject

sudo vim /etc/postfix/header_checks

# add at the head ( reject if email address is empty )
/^From:.*<#.*@.*>/ REJECT
/^Return-Path:.*<#.*@.*>/ REJECT

sudo vim /etc/postfix/body_checks

# reject if includes 'example.com' in mail body
/^(|[^>].*)example.com/ REJECT

sudo vim /etc/aliases

# Añadir
root:   snicoper@mail.workspace.local

sudo newaliases
sudo service postfix restart

Dovecot¶

sudo vim /etc/dovecot/conf.d/10-auth.conf

# line 10: uncomment and change ( allow plain text auth )
disable_plaintext_auth = no

# line 100: add
auth_mechanisms = plain login

sudo vim /etc/dovecot/conf.d/10-mail.conf

# line 30: uncomment and add
mail_location = maildir:~/Maildir

sudo vim /etc/dovecot/conf.d/10-master.conf

# line 95: uncomment and add
# Postfix smtp-auth
    unix_listener /var/spool/postfix/private/auth {
    mode = 0666
    user = postfix # add
    group = postfix # add
}

sudo service dovecot restart

SSL¶

Ver Crear certificado SSL

sudo vim /etc/postfix/main.cf

Nota

Usar lxmaq1.crt y lxmaq1.key con los mismos nombres que se hayan creado en Crear certificado SSL

# add at the last line
# SSL
smtpd_use_tls = yes
smtpd_tls_cert_file = /etc/ssl/private/lxmaq1.crt
smtpd_tls_key_file = /etc/ssl/private/lxmaq1.key
smtpd_tls_session_cache_database = btree:${data_directory}/smtpd_scache

sudo vim /etc/postfix/master.cf

# line 28-30: uncomment
smtps     inet  n       -       -       -       -       smtpd
  -o syslog_name=postfix/smtps
  -o smtpd_tls_wrappermode=yes

sudo vim /etc/dovecot/conf.d/10-ssl.conf

# line 6: uncomment
ssl = yes

# line 12,13: uncomment and specify certificate
ssl_cert = </etc/ssl/private/lxmaq1.crt
ssl_key = </etc/ssl/private/lxmaq1.key

sudo service postfix restart
sudo service dovecot restart