Postfix_Dovecot邮件服务器搭建

 user@localhost  ~  mysql -u user -p
 Enter password: 
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Server version: 5.5.44-MariaDB MariaDB Server

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MariaDB [(none)]> 
MariaDB [(none)]> create database postfix;
MariaDB [(none)]> CREATE USER 'postfix'@'localhost' IDENTIFIED BY 'postfixadmin';
MariaDB [(none)]> CREATE USER 'postfix'@'localhost.localdomain' IDENTIFIED BY 'postfixadmin';
MariaDB [(none)]> GRANT ALL PRIVILEGES ON `postfix` . * TO 'postfix'@'localhost';
MariaDB [(none)]> GRANT ALL PRIVILEGES ON `postfix` . * TO 'postfix'@'localhost.localdomain';
MariaDB [(none)]> FLUSH PRIVILEGES;

user@localhost  ~  sudo yum install roundcubemail
user@localhost  ~  cd /usr/share 
user@localhost  /usr/share  sudo wget wget http://jaist.dl.sourceforge.net/project/postfixadmin/postfixadmin/postfixadmin-2.93/postfixadmin-2.93.tar.gz
user@localhost  /usr/share  sudo tar xzvf postfixadmin-2.93.tar.gz
user@localhost  /usr/share  sudo mv postfixadmin-2.93 postfixadmin

Alias /roundcubemail /usr/share/roundcubemail
Alias /mail /usr/share/roundcubemail
Alias /postfixadmin /usr/share/postfixadmin

<Directory /usr/share/roundcubemail/>
        Options none
        AllowOverride Limit
        Require all granted
</Directory>

<Directory /usr/share/postfixadmin/>
        Options none
        AllowOverride Limit
        Require all granted
</Directory>

<Directory /usr/share/roundcubemail/installer>
        Options none
        AllowOverride Limit
        Require all granted
</Directory>

$CONF['configured'] = true;
$CONF['setup_password'] = 'abc123def';
$CONF['default_language'] = 'cn';
$CONF['database_type'] = 'mysqli';
$CONF['database_host'] = 'localhost';
$CONF['database_user'] = 'postfix';
$CONF['database_password'] = 'postfixadmin';
$CONF['database_name'] = 'postfix';
$CONF['admin_email'] = 'yourmailaddress@126.com';
$CONF['encrypt'] = 'dovecot:CRAM-MD5';
$CONF['dovecotpw'] = "/usr/bin/doveadm pw";

myhostname = mail.freesign.net
mydomain = freesign.net

inet_interfaces = all
inet_protocols = ipv4
mydestination = localhost.localdomain, localhost
mynetworks = 127.0.0.0/8
#以上的参数比较的严格

virtual_mailbox_domains = proxy:mysql:/etc/postfix/mysql_virtual_domains_maps.cf
virtual_alias_maps = proxy:mysql:/etc/postfix/mysql_virtual_alias_maps.cf
virtual_mailbox_maps = proxy:mysql:/etc/postfix/mysql_virtual_mailbox_maps.cf
#邮件的根目录
virtual_mailbox_base = /aaa/maildata/

#vmail:vmail的uid和gid
virtual_uid_maps = static:5000
virtual_gid_maps = static:5000
virtual_transport = dovecot
dovecot_destination_recipient_limit = 1
proxy_read_maps = $local_recipient_maps $mydestination $virtual_alias_maps $virtual_alias_domains $virtual_mailbox_maps $virtual_mailbox_domains $relay_recipient_maps $relay_domains $canonical_maps $sender_canonical_maps $recipient_canonical_maps $relocated_maps $transport_maps $mynetworks $virtual_mailbox_limit_maps

#smtps 加密发送服务设置
smtpd_tls_cert_file = /etc/pki/dovecot/certs/dovecot.pem
smtpd_tls_key_file = /etc/pki/dovecot/private/dovecot.pem
smtpd_use_tls = yes
smtpd_tls_auth_only = yes

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_sasl_application_name = smtpd
smtpd_recipient_restrictions =
        permit_sasl_authenticated,
        permit_mynetworks,
        reject_unauth_destination

#用户配额，可以后续慢慢优化
message_size_limit = 20480000
virtual_mailbox_limit_maps = mysql:/etc/postfix/mysql_virtual_mailbox_limit_maps.cf

maximal_queue_lifetime = 1d
bounce_queue_lifetime = 1d

submission inet n       -       n       -       -       smtpd
  -o syslog_name=postfix/submission
  -o smtpd_tls_security_level=encrypt
  -o smtpd_sasl_auth_enable=yes
smtps     inet  n       -       n       -       -       smtpd
  -o syslog_name=postfix/smtps
  -o smtpd_tls_wrappermode=yes
  -o smtpd_sasl_auth_enable=yes

dovecot   unix  -       n       n       -       -       pipe
   flags=DRhu user=vmail:vmail argv=/usr/libexec/dovecot/dovecot-lda -f ${sender} -d ${recipient}

user = postfix
password = postpasswd
hosts = localhost
dbname = postfix
query  = SELECT maildir FROM mailbox WHERE username='%s' AND active = '1'

protocols = imap pop3
listen = *

passdb {
    driver = sql
    args = /etc/dovecot/dovecot-sql.conf.ext
}

userdb {
    driver = static
    args = uid=5000 gid=5000 home=/aaa/maildata/%d/%n allow_all_users=yes
}

driver = mysql
connect = host=localhost dbname=postfix user=postfix password=postfixadmin
default_pass_scheme = CRAM-MD5
user_query = SELECT CONCAT('/abc/maildata/', maildir) AS home, 5000 AS uid, 5000 AS gid, CONCAT('*:bytes=', quota) as quota_rule FROM mailbox WHERE username = '%u' AND active='1'
password_query = SELECT username AS user, password, CONCAT('/webdata/data/maildata/', maildir) AS userdb_home, 5000 AS userdb_uid, 5000 AS userdb_gid, CONCAT('*:bytes=', quota) as userdb_quota_rule FROM mailbox WHERE username = '%u' AND active='1'

下面把dovecot最主要的配置列举出来：
```bash
#10-mail.conf 
mail_location = maildir:/aaa/maildata/%d/%n/Maildir
#10-auth.conf 
disable_plaintext_auth = no
auth_mechanisms = plain login cram-md5
#10-master.conf
service imap-login {
  inet_listener imap {
    #port = 143  关掉非加密访问
  } 
  inet_listener imaps {
    port = 993
    ssl = yes
  }
}
service auth {
unix_listener auth-userdb {
    mode = 0666
    user = vmail
    group =  vmail
  }

  # Postfix smtp-auth
  unix_listener /var/spool/postfix/private/auth {
  mode = 0666
  user = postfix
  }
}
#10-ssl.conf
ssl = yes
ssl_cert = </etc/pki/dovecot/certs/dovecot.pem
ssl_key = </etc/pki/dovecot/private/dovecot.pem

#数据库访问设置
$config['db_dsnw'] = 'mysql://postfix:postfixadmin@localhost/postfix';
#IMAP
$config['default_host'] = 'ssl://mail.freesign.com/';
$config['default_port'] = 993;
#SMTP
$config['smtp_server'] = 'tls://topcubaircraft.com';
// SMTP port (default is 25; use 587 for STARTTLS or 465 for the
$config['smtp_port'] = 587;
$config['smtp_user'] = '%u';
$config['smtp_pass'] = '%p';

$config['plugins'] = array('archive', 'attachment_reminder', 'help');
$config['sent_mbox'] = 'Sent';
$config['trash_mbox'] = 'Trash';
$config['drafts_mbox'] = 'Drafts';
$config['junk_mbox'] = 'Junk';