如何使用 Dovecot 设置 Postfix 电子邮件服务器

1sudo openssl req -x509 -nodes -days 365 -newkey rsa:2048 -keyout /etc/ssl/private/mail.key -out /etc/ssl/certs/mailcert.pem

1sudo openssl req -nodes -days 365 -newkey rsa:2048 -keyout /etc/ssl/private/mail.key -out mailcert.csr

 1Generating a 2048 bit RSA private key
 2.............................+++
 3................+++
 4writing new private key to 'mail.key'
 5-----
 6You are about to be asked to enter information that will be incorporated
 7into your certificate request.
 8What you are about to enter is what is called a Distinguished Name or a DN.
 9There are quite a few fields but you can leave some blank
10For some fields there will be a default value,
11If you enter '.', the field will be left blank.
12-----
13Country Name (2 letter code) [AU]: US
14State or Province Name (full name) [Some-State]: Virginia
15Locality Name (eg, city) []: Langley
16Organization Name (eg, company) [Internet Widgits Pty Ltd]: Network Services Association
17Organizational Unit Name (eg, section) []: Infrastructure Services
18Common Name (e.g. server FQDN or YOUR name) []: mail.mydomain.com
19Email Address []: [email protected]
20
21Please enter the following 'extra' attributes
22to be sent with your certificate request
23A challenge password []:
24An optional company name []:

1[root@yourbase] ~# dig MX mydomain.com +short @ns1.digitalocean.com
250 mail.mydomain.com.
3[root@yourbase] ~# host mail.mydomain.com ns1.digitalocean.com
4Using domain server:
5Name: ns1.digitalocean.com
6Address: 198.199.120.125#53
7Aliases:
8
9mail.mydomain.com has address 82.196.9.119

1aptitude remove exim4 && aptitude install postfix && postfix stop

1submission inet n       -       -       -       -       smtpd
2  -o syslog_name=postfix/submission
3  -o smtpd_tls_wrappermode=no
4  -o smtpd_tls_security_level=encrypt
5  -o smtpd_sasl_auth_enable=yes
6  -o smtpd_recipient_restrictions=permit_mynetworks,permit_sasl_authenticated,reject
7  -o milter_macro_daemon_name=ORIGINATING
8  -o smtpd_sasl_type=dovecot
9  -o smtpd_sasl_path=private/auth

1myhostname = mail.domain.com
2myorigin = /etc/mailname
3mydestination = mail.domain.com, domain.com, localhost, localhost.localdomain
4relayhost =
5mynetworks = 127.0.0.0/8 [::ffff:127.0.0.0]/104 [::1]/128
6mailbox_size_limit = 0
7recipient_delimiter = +
8inet_interfaces = all

1alias_maps = hash:/etc/aliases
2alias_database = hash:/etc/aliases

1smtpd_tls_cert_file=/etc/ssl/certs/mailcert.pem
2smtpd_tls_key_file=/etc/ssl/private/mail.key
3smtpd_use_tls=yes
4smtpd_tls_session_cache_database = btree:${data_directory}/smtpd_scache
5smtp_tls_session_cache_database = btree:${data_directory}/smtp_scache
6smtpd_tls_security_level=may
7smtpd_tls_protocols = !SSLv2, !SSLv3

1local_recipient_maps = proxy:unix:passwd.byname $alias_maps

 1mailer-daemon: postmaster
 2postmaster: root
 3nobody: root
 4hostmaster: root
 5usenet: root
 6news: root
 7webmaster: root
 8www: root
 9ftp: root
10abuse: root

1root: yourname

1newaliases

1aptitude install dovecot-core dovecot-imapd

1aptitude install dovecot-common

 1disable_plaintext_auth = no
 2mail_privileged_group = mail
 3mail_location = mbox:~/mail:INBOX=/var/mail/%u
 4userdb {
 5  driver = passwd
 6}
 7passdb {
 8  args = %s
 9  driver = pam
10}
11protocols = " imap"

1protocol imap {
2  mail_plugins = " autocreate"
3}
4plugin {
5  autocreate = Trash
6  autocreate2 = Sent
7  autosubscribe = Trash
8  autosubscribe2 = Sent
9}

1service auth {
2  unix_listener /var/spool/postfix/private/auth {
3    group = postfix
4    mode = 0660
5    user = postfix
6  }
7}

1ssl=required
2ssl_cert = </etc/ssl/certs/mailcert.pem
3ssl_key = </etc/ssl/private/mail.key

1newaliases
2postfix start
3service dovecot restart

1~# mail [email protected]
2Subject: test email from postfix
3this is a test
4.
5EOT

1~# mail
2Heirloom mailx version 12.5 6/20/10. Type ? for help.
3"/var/mail/root": 1 message
4>N 1 Your Name Wed Nov 13 23:45 41/1966 Re: test email from postf

 1~# adduser joe
 2Adding user `joe' ...
 3Adding new group `joe' (1001) ...
 4Adding new user `joe' (1001) with group `joe' ...
 5Creating home directory `/home/joe' ...
 6Copying files from `/etc/skel' ...
 7Enter new UNIX password: Enter password here
 8Retype new UNIX password: Enter password here
 9passwd: password updated successfully
10Changing the user information for joe
11Enter the new value, or press ENTER for the default
12        Full Name []:
13        Room Number []:
14        Work Phone []:
15        Home Phone []:
16        Other []:
17Is the information correct? [Y/n] Y