Shulou(Shulou.com)06/01 Report--

# postfix#

1.postfix provides smtp protocol for delivering mail.

Default port 25

Default release directory / var/log/maillog # # service log

Mail root @. Send an email

Themes:

Content.

.

Mailq # View message queues

Postqueue-f # reprocess the mail queue

By default, the mail port is only open on 127.0.0.1.

two。

Configuration

Vim / etc/postfix/main.cf

76 myhostname = westos-mail.westos.com # Network excuse for opening port 25

83 mydomain = westos.com # specify the domain name of mta

99 myorigin = westos.com # define the end of the message source (the character content after @)

116 inet_interfaces = all # Network excuse for opening port 25

164For mydestination = $myhostname, $mydomain, localhost # accept the assignment of email characters

Systemctl restart postfix.service

Systemctl stop firewalld

3. Mail alias

[root@westos-mail named] # vim / etc/aliases

97 admin: root # # Mail alias

98 moreuser:: include:/etc/postfix/moreuser # # send email in groups

[root@qq-mail ~] # vim / etc/postfix/moreuser

User1

User2

[root@qq-mail ~] # systemctl restart postfix.service

Mail-u user name

Postsuper-d Delete queued messages

Postqueue-f resend queued messages

Postalias / etc/aliases

4. Send mail through a remote host

[kiosk@foundation75 Desktop] $yum install-y telnet

[root@foundation75 Desktop] # telnet 172.25.254.101 25

Trying 172.25.254.101...

Connected to 172.25.254.101.

Escape character is'^]'.

220 westos-mail.westos.com ESMTP Postfix

Ehlo hello

250-westos-mail.westos.com

250-PIPELINING

250-SIZE 10240000

250-VRFY

250-ETRN

250-ENHANCEDSTATUSCODES

250-8BITMIME

250 DSN

Mail from:root@westos.com

250 2.1.0 Ok

Rcpt to:root@qq.com

250 2.1.5 Ok

Data

354 End data with.

Qwdq

Qwdeq

Qeq

.

test

[root@qq-mail ~] # mail

Heirloom Mail version 12.5 7-5-10. Type? For help.

"/ var/spool/mail/root": 2 messages 1 new 2 unread

U 1 root Tue May 23 09:45 25 amp 739 "qq"

N 2 root@westos.com Tue May 23 09:53 15 Compact 494

& 2

Message 2:

From root@westos.com Tue May 23 09:53:48 2017

Return-Path:

X-Original-To: root@qq.com

Delivered-To: root@qq.com

Status: R

Qwdq

Qwdeq

Qeq

5. Access control of mail client

On mta

Postconf-e "smtpd_client_restrictions = check_client_access hash:/etc/postfix/access"

Root@westos-mail named] # vim / etc/postfix/main.cf

681 smtpd_client_restrictions = check_client_access hash:/etc/postfix/acce ss

Root@westos-mail named] # vim / etc/postfix/access

476 172.25.254.95 REJECT

[root@westos-mail named] # postmap / etc/postfix/access

[root@westos-mail named] # ls

Data named.ca named.localhost qq.com.zone westos.com.zone

Dynamic named.empty named.loopback slaves

[root@westos-mail named] # cd / etc/postfix

[root@westos-mail postfix] # ls

Access canonical header_checks master.cf transport

Access.db generic main.cf relocated virtual

test

[root@test Desktop] # telnet 172.25.254.195 25

Trying 172.25.254.195...

Connected to 172.25.254.195.

Escape character is'^]'.

220 westos-mail.westos.com ESMTP Postfix

Mail from:root@westos.com

250 2.1.0 Ok

Rcpt to:root@qq.com

554 5.7.1: Client host rejected: Access denied

# # restrict users from sending messages

[root@westos-mail postfix] # postconf-e "smtpd_sender_restrictions = check_sender_access hash:/etc/postfix/sender"

[root@westos-mail postfix] # vim / etc/postfix/main.cf

681 smtpd_sender_restrictions = check_sender_access hash:/etc/postfix/sender

[root@westos-mail postfix] # vim / etc/postfix/sender

Student@westos.com REJECT

[root@westos-mail postfix] # postmap / etc/postfix/sender

[root@westos-mail postfix] # ls

Access canonical header_checks master.cf sender transport

Access.db generic main.cf relocated sender.db virtual

[root@westos-mail postfix] # systemctl restart postfix.service

test

[root@foundation75 Desktop] # telnet 172.25.254.101 25

Trying 172.25.254.101...

Connected to 172.25.254.101.

Escape character is'^]'.

220 westos-mail.westos.com ESMTP Postfix

Mail from:student@westos.com

250 2.1.0 Ok

Rcpt to:root@westos.com

554 5.7.1: Sender address rejected: Access denied

# # restrict users from receiving

[root@westos-mail postfix] # postconf-e "smtpd_sender_restrictions = check_recipient_access hash:/etc/postfix/recip"

[root@westos-mail postfix] # vim / etc/postfix/main.cf

Smtpd_sender_restrictions = check_recipient_access hash:/etc/postfix/recip

[root@westos-mail postfix] # vim / etc/postfix/recip

Westos@westos.com REJECT

[root@westos-mail postfix] # postmap / etc/postfix/recip

[root@westos-mail postfix] # systemctl restart postfix.service

test

[root@foundation75 Desktop] # telnet 172.25.254.101 25

Trying 172.25.254.101...

Connected to 172.25.254.101.

Escape character is'^]'.

220 westos-mail.westos.com ESMTP Postfix

Mail from:root@qq.com

250 2.1.0 Ok

Rcpt to:westos@westos.com

554 5.7.1: Recipient address rejected: Access denied

# outbound address camouflage

Do a good job of dns analysis

[root@westos-mail named] # postconf-e "smtp_generic_maps = hash:/etc/postfix/generic"

[root@westos-mail named] # vim / etc/postfix/main.cf

Smtp_generic_maps = hash:/etc/postfix/generic

[root@westos-mail named] # vim / etc/postfix/generic

Westos@westos.com hello@sb.com

[root@westos-mail named] # postmap / etc/postfix/generic

[root@westos-mail named] # cd / etc/postfix/

[root@westos-mail postfix] # ls

Access canonical generic.db main.cf recip relocated sender.db virtual

Access.db generic header_checks master.cf recip.db sender transport

[root@westos-mail postfix] # id westos

Uid=1001 (westos) gid=1001 (westos) groups=1001 (westos)

test

From hello@sb.com Tue May 23 11:55:08 2017

Return-Path:

X-Original-To: root@qq.com

Delivered-To: root@qq.com

Date: Tue, 23 May 2017 11:55:08-0400

To: root@qq.com

Subject: qdq

User-Agent: Heirloom mailx 12.5 7-5-10

Content-Type: text/plain; charset=us-ascii

From: hello@sb.com

Status: R

# # inbound address Translation

Do a good job of dns analysis

[root@westos-mail postfix] # postconf-e "virtual_alias_maps = hash:/etc/postfix/virtual"

[root@westos-mail postfix] # vim / etc/postfix/virtual

295 hello@sb.com westos@westos.com

[root@westos-mail postfix] # vim / etc/postfix/main.cf

Virtual_alias_maps = hash:/etc/postfix/virtual

[root@westos-mail postfix] # postmap / etc/postfix/virtual

[root@westos-mail postfix] # systemctl restart postfix.service

[root@westos-mail postfix] # mail hello@sb.com

Subject: qwdq

Qwdq

Dq

Wdq

.

EOT

test

[root@westos-mail postfix] # mail-u westos

Heirloom Mail version 12.5 7-5-10. Type? For help.

"/ var/mail/westos": 1 message 1 new

N 1 root Tue May 23 12:10 20 amp 560 "qwdq"

& 1

Message 1:

From root@westos.com Tue May 23 12:10:01 2017

Return-Path:

X-Original-To: hello@sb.com

Delivered-To: westos@westos.com

Date: Tue, 23 May 2017 12:10:00-0400

To: hello@sb.com

Subject: qwdq

User-Agent: Heirloom mailx 12.5 7-5-10

Content-Type: text/plain; charset=us-ascii

From: root@westos.com (root)

Status: R

# #

# dovecot#

1.dovecot is used to provide pickup protocols.

Pop3 110

Imap 143

Imaps 993

Pop3s 995

Given the user name and password, the dovecot program looks at the user's mail file instead of us.

2.yum intsall-y dovecot

3.

[root@westos-mail named] # vim / etc/dovecot/dovecot.conf

24 protocols = imap pop3 lmtp

48 login_trusted_networks = 0.0.0.0amp 0

49 disable_plaintext_auth = no

[root@westos-mail named] # vim / etc/dovecot/conf.d/10-mail.conf

30 mail_location = mbox:~/mail:INBOX=/var/mail/%u

[root@westos-mail ~] # su westos

[westos@westos-mail root] $cd ~

[westos@westos-mail ~] $mkdir / home/westos/mail/.imap-p

[westos@westos-mail ~] $touch / home/westos/mail/.imap/INBOX

[root@westos-mail westos] # passwd westos

Changing password for user westos.

New password:

BAD PASSWORD: The password is a palindrome

Retype new password:

Passwd: all authentication tokens updated successfully.

[root@westos-mail westos] # systemctl restart dovecot.service

[root@westos-mail ~] # mkdir / etc/skel/mail/.imap-p

[root@westos-mail ~] # touch / etc/skel/mail/.imap/INBOX

[root@westos-mail ~] # useradd zhang

[root@westos-mail ~] # passwd zhang

Changing password for user zhang.

New password:

BAD PASSWORD: The password is a palindrome

Retype new password:

Passwd: all authentication tokens updated successfully.

[root@westos-mail ~] # systemctl restart dovecot.service

test

Host installs mutt

[root@foundation75 Desktop] # mutt-f pop://zhang@172.25.254.101

Install Thunderbird

Use the real machine

Rpm-ivh thunderbird-31.2.0-1.el7.x86_64.rpm

Next, do the following

After entering, log in and reply email to westos@westom.com

test

[root@westos-mail ~] # mail

Heirloom Mail version 12.5 7-5-10. Type? For help.

"/ var/spool/mail/root": 2 messages 1 new

1 root Tue May 23 11:22 21max 572 "qwew"

> N 2 westos@westos.com Wed May 24 11:52 32 amp 940 "Re:123"

& 2

Message 2:

From westos@westos.com Wed May 24 11:52:52 2017

Return-Path:

X-Original-To: root@westos.com

Delivered-To: root@westos.com

Date: Wed, 24 May 2017 23:52:52 + 0800

From: "westos@westos.com"

User-Agent: Mozilla/5.0 (X11; Linux x8634; rv:31.0) Gecko/20100101 Thunderbird/

31.2.0

To: root

Subject: Re:123

Content-Type: text/plain; charset=UTF-8; format=flowed

Status: R

# postfix+mariadb#

[root@westos-mail ~] # yum install-y httpd php php-mysql mariadb-server

[root@westos-mail ~] # systemctl start mariadb

[root@westos-mail ~] # vim / etc/my.cnf

[root@westos-mail ~] # systemctl restart postfix.service

[root@westos-mail ~] # systemctl restart mariadb.service

[root@westos-mail ~] # mysql_secure_installation

[root@westos-mail ~] # cd / var/www/html

[root@westos-mail html] # ls

PhpMyAdmin-3.4.0-all-languages.tar.bz2

[root@westos-mail html] # tar jxf phpMyAdmin-3.4.0-all-languages.tar.bz2

[root@westos-mail html] # rm-fr * .bz2

[root@westos-mail html] # ls

PhpMyAdmin-3.4.0-all-languages

[root@westos-mail html] # mv phpMyAdmin-3.4.0-all-languages/ myadmin

[root@westos-mail html] # ls

Myadmin

[root@westos-mail html] # cd myadmin

[root@westos-mail myadmin] # cp config.sample.inc.php config.inc.php

[root@westos-mail myadmin] # vim config.inc.php

[root@westos-mail myadmin] # systemctl restart httpd

[root@westos-mail myadmin] # mysql-uroot-p

Enter password:

Welcome to the MariaDB monitor. Commands end with; or\ g.

Your MariaDB connection id is 32

Server version: 5.5.35-MariaDB MariaDB Server

Copyright (c) 2000, 2013, Oracle, Monty Program Ab and others.

Type 'help;' or'\ h' for help. Type'\ c'to clear the current input statement.

MariaDB [(none)] > create user postuser@localhost identified by 'postuser'

Query OK, 0 rows affected (0.00 sec)

MariaDB [(none)] > grant select,update,insert on email.* to postuser@localhost

Query OK, 0 rows affected (0.00 sec)

MariaDB [(none)] > quit

Bye

[root@westos-mail myadmin] # mysql-upostuser-p

Enter password:

Welcome to the MariaDB monitor. Commands end with; or\ g.

Your MariaDB connection id is 33

Server version: 5.5.35-MariaDB MariaDB Server

Copyright (c) 2000, 2013, Oracle, Monty Program Ab and others.

Type 'help;' or'\ h' for help. Type'\ c'to clear the current input statement.

MariaDB [(none)] > select * from email.emailuser

+-+

| | username | password | domain | maildir | |

+-+

| | lee@lee.com | lee | lee.com | / mnt/lee.com/lee/ | |

+-+

[root@westos-mail ~] # cd / etc/postfix/

[root@westos-mail postfix] # vim mailuser.cf # user name query

1 hosts = localhost # # the host where the database is located

2 user = postuser # # users who log in to the database

3 password = postuser # # password for logging into the database

4 dbname = email # # the name of the postfix to query

5 table = emailuser # # postfix the name of the table to be queried

6 select_field = username # # fields to be queried by postfix

7 where_field = username # # query conditions for the postfix given by the user

[root@westos-mail postfix] # postmap-Q "lee@lee.com" mysql:/etc/postfix/mailuser.cf

Lee@lee.com

[root@westos-mail postfix] # vim maildomain.cf # user domain name query

1 hosts = localhost

2 user = postuser

3 password = postuser

4 dbname = email

5 table = emailuser

6 select_field = domain

7 where_field = domain

[root@westos-mail postfix] # postmap-Q "lee.com" mysql:/etc/postfix/maildomain.cf

Lee.com

[root@westos-mail postfix] # vim mailbox.cf # query the location of user's mailbox

1 hosts = localhost

2 user = postuser

3 password = postuser

4 dbname = email

5 table = emailuser

6 select_field = maildir

7 where_field = username

[root@westos-mail postfix] # postmap-Q "lee@lee.com" mysql:/etc/postfix/mailbox.cf

/ mnt/lee.com/lee/

Attached picture

# configure postfix

[root@westos-mail] # groupadd-g 666 vmail

[root@westos-mail ~] # id vmail

Uid=666 (vmail) gid=666 (vmail) groups=666 (vmail)

[root@westos-mail ~] # postconf-d | grep virtual

[root@westos-mail ~] # postconf-e "virtual_mailbox_base = / home/vmail"

[root@westos-mail ~] # postconf-e "virtual_uid_maps = static:666"

[root@westos-mail ~] # postconf-e "virtual_gid_maps = static:666"

[root@westos-mail ~] # postconf-e "virtual_alias_maps = mysql:/etc/postfix/mailuser.cf"

[root@westos-mail ~] # postconf-e "virtual_mailbox_maps = mysql:/etc/postfix/mailbox.cf"

[root@westos-mail ~] # postconf-e "virtual_mailbox_domain = mysql:/etc/postfi/maildomain.cf"

Systemctl restart postfix.service

test

The mail to lee@lee.com can be found in / home/vmail/lee.com/new/.

Attached picture

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