postfix_dovecot

#!/bin/bash

#################################################
# Install script for Mail server
#  Setting for virtual accounts and domains.
#
# This script was tested with Ubuntu 10.04 TLS.
#
# Required:
#
# Author  : Takahiro Fujiwara ( tfmagician )
# Created : 2010-12-05
# Updated : 2011-01-24
#################################################

# Check executable user.
if [ "`whoami`" != "root" ]; then
echo "You need to be root to run this!"
  exit 2
fi

##
echo 'Install Postfix and Dovecot'
apt-get install -y postfix postfix-dev dovecot-common dovecot-dev dovecot-imapd dovecot-pop3d dovecot-postfix mailutils

##
echo 'Add user to controll virtual users of mail server'
useradd -u 5000 -m -d /var/vmail vmail

##
echo 'Create virtual users.'
while [ -z "${DOMAIN}" ]; do
    echo -n 'Enter virtual domain: '
    read DOMAIN
done
while [ -z "${ACCOUNTS}" ]; do
    echo -n 'Enter virtual user accounts ( if you have some users, split spaces ): '
    read ACCOUNTS
done
while [ -z "${SUPPORT}" ]; do
    echo -n "Select support account ( ${ACCOUNTS} ): "
    read SUPPORT
done

cat > /etc/postfix/main.cf <<CONF
###############################################################
# Basic settings
###############################################################

queue_directory = /var/spool/postfix
command_directory = /usr/sbin
mail_owner = postfix

# Postfix receive mails from this interfaces.
inet_interfaces = all

# Trust SMTP clients.
mynetworks = 127.0.0.1

# MTA hostname.
myhostname = ${DOMAIN}

# If this server sends email containing only username, postfix appends myorigin to username.
append_at_myorigin = yes
myorigin = `hostname`.localdomain

# Comment out because of using virtual host.
#mydomain = localhost

# Postfix only receives email by these domains.
mydestination = `hostname`.localdomain, localhost.localdomain, localhost

unknown_local_recipient_reject_code = 550
alias_maps = hash:/etc/aliases
alias_database = hash:/etc/aliases

###############################################################
# Virtual mailbox settings
###############################################################

virtual_mailbox_domains = /etc/postfix/virtual-conf/domains
virtual_mailbox_base = /var/vmail
virtual_mailbox_maps = hash:/etc/postfix/virtual-conf/mailboxes
virtual_minimum_uid = 5000
virtual_uid_maps = static:5000
virtual_gid_maps = static:5000

###############################################################
# SMTP Auth
###############################################################

smtpd_sasl_auth_enable = yes
smtpd_recipient_restrictions =
  permit_mynetworks
  permit_sasl_authenticated
  reject_unauth_destination
smtpd_sasl_type = dovecot
smtpd_sasl_path = private/dovecot-auth

###############################################################
# TLS
###############################################################

smtpd_use_tls = yes
smtpd_tls_cert_file = /etc/ssl/certs/ssl-mail.pem
smtpd_tls_key_file = /etc/ssl/private/ssl-mail.key
smtp_tls_CApath = /etc/ssl/certs/ca-certificates.crt
smtpd_tls_loglevel = 1

###############################################################
# Relay Gmail server
###############################################################

#relayhost = [smtp.gmail.com]:587
#smtp_use_tls = yes
#smtp_sasl_auth_enable = yes
#smtp_sasl_password_maps = hash:/etc/postfix/sasl_passwd
#smtp_sasl_tls_security_options = noanonymous
#smtp_sasl_mechanism_filter = plain

###############################################################
# Others
###############################################################

# For debug.
#debug_peer_level = 2
#debugger_command =
#    PATH=/bin:/usr/bin:/usr/local/bin:/usr/X11R6/bin
#    xxgdb \$daemon_directory/\$process_name \$process_id & sleep 5

# Some command paths.
sendmail_path = /usr/sbin/sendmail
newaliases_path = /usr/bin/newaliases
mailq_path = /usr/bin/mailq
setgid_group = postdrop

# For documents.
#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
CONF

if [ ! -e /etc/postfix/virtual-conf ]; then
    mkdir /etc/postfix/virtual-conf
fi
cat > /etc/postfix/virtual-conf/domains <<CONF
${DOMAIN}
CONF

for ACCOUNT in ${ACCOUNTS}; do
cat >> /etc/postfix/virtual-conf/mailboxes <<CONF
${ACCOUNT}@${DOMAIN} ${DOMAIN}/${ACCOUNT}/
CONF
done
postmap /etc/postfix/virtual-conf/mailboxes
newaliases

/etc/init.d/postfix restart

cp /etc/dovecot/dovecot.conf /etc/dovecot/dovecot.conf.org
cat > /etc/dovecot/dovecot.conf <<CONF
protocols = imap pop3
listen = *
disable_plaintext_auth = no
ssl = no
mail_location = maildir:/var/vmail/%d/%n

protocol imap {
}

protocol pop3 {
}

protocol lda {
  postmaster_address = ${SUPPORT}@${DOMAIN}
}

auth default {

  mechanisms = cram-md5 plain
  user = root

  passdb passwd-file {
    args = /etc/dovecot/passwd
  }
  userdb passwd-file {
    args = /etc/dovecot/passwd
  }

  socket listen {
    client {
      path = /var/spool/postfix/private/dovecot-auth
      mode = 0660
      user = postfix
      group = postfix
    }
  }

}

dict {
}

plugin {
}
CONF

for ACCOUNT in ${ACCOUNTS}; do
    echo "Enter password for user ${ACCOUNT}"
    while [ -z "${PASSWORD}" ]; do
      PASSWORD=`dovecotpw -s CRAM-MD5`
    done
    cat >> /etc/dovecot/passwd <<CONF
${ACCOUNT}@${DOMAIN}:${PASSWORD}:5000:5000
CONF
    unset PASSWORD
done

/etc/init.d/dovecot restart