![\"postfix01\"](\"https:\/\/nolabnoparty.com\/wp-content\/uploads\/2013\/06\/postfix01.jpg\" "\\"postfix01\\"")
<\/p>\n<\/p>\n
A working mail server can be configured using Postfix (MTA) with the addition of some components like Dovecot (IMAP) and Roundcube (webmail).<\/p>\n
Combining these applications we obtain an email system with SMTP, IMAP, POP3 protocols<\/strong> that can be used in a corporate environment where the budget is pretty limited. This solution is based on Open Source software where no licenses<\/strong> need to be purchased for its use.<\/p>\n <\/p>\n <\/p>\n To work properly, system needs to have selinux disabled<\/strong>.<\/p>\n # vi \/etc\/selinux\/config<\/span><\/p>\n <\/p>\n From the console, install Postfix with yum<\/em> command.<\/p>\n # yum install postfix<\/span><\/p>\n Edit configuration file<\/strong> \/etc\/postfix\/main.cf<\/em> and set the parameters as follow:<\/p>\n # vi \/etc\/postfix\/main.cf<\/span><\/p>\n Once all the parameters have been set, set application to start during system boot<\/strong> and start the service.<\/p>\n # chkconfig postfix on <\/p>\n To check if everything works as expected, type from console the following commands to send an email<\/strong>:<\/p>\n # telnet localhost smtp <\/span><\/p>\n To check if the\u00a0email has been received<\/strong>, have a look at the \/home\/username\/Maildir\/new<\/em> directory.<\/p>\n # cd \/home\/username<\/strong><\/span>\/Maildir\/new\/ The email was received by the system<\/strong> then the mail server is working properly.<\/p>\n <\/p>\n While Postfix acts as Mail Transfer Agent (MTA) <\/span>only, in order to retrieve emails using modern tools we need to enable IMAP\/POP3<\/strong> protocols. Dovecot is an application that acts as a secure IMAP and POP3 server<\/strong>.<\/p>\n Use the yum<\/em> command to install Dovecot.<\/p>\n # yum install dovecot<\/span><\/p>\n # vi \/etc\/dovecot\/dovecot.conf<\/span><\/p>\n Then we need to specify the mail location by editing the file \/etc\/dovecot\/conf.d\/10-mail.conf<\/em>.<\/p>\n # vi \/etc\/dovecot\/conf.d\/10-mail.conf<\/span><\/p>\n # vi \/etc\/dovecot\/conf.d\/10-auth.conf<\/span><\/p>\n Last file to edit \/etc\/dovecot\/conf.d\/10-master.conf<\/em>.<\/p>\n # vi \/etc\/dovecot\/conf.d\/10-master.conf<\/span><\/p>\n Set Dovecot to start at system boot<\/strong> and start the service.<\/p>\n # chkconfig dovecot on <\/p>\n To check if Dovecot is working, we test the program through the POP3 protocol<\/strong>.<\/p>\n # telnet localhost pop3<\/span><\/p>\n <\/p>\n Roundcube is a browser-based IMAP client<\/strong> with an application-like user interface.<\/p>\n To configure the application, firstly we need to install MySQL server and Apache<\/strong> in the system.<\/p>\n # yum install mysql-server mysql-devel httpd<\/span><\/p>\n Enable both MySQL and Apache to start at system boot<\/strong> and enable services.<\/p>\n # chkconfig mysqld on # chkconfig httpd on <\/p>\n To install Roundcube with yum<\/em> command, we need to install the EPEL repository<\/strong> in the system.<\/p>\n # wget http:\/\/dl.fedoraproject.org\/pub\/epel\/6\/x86_64\/epel-release-6-8.noarch.rpm Once EPEL repo has been installed, use\u00a0yum<\/em>\u00a0to install Roundcube.<\/p>\n # yum install roundcubemail<\/span><\/p>\n <\/p>\n To define the database<\/strong> used by the application, we need to access MySQL configuration.<\/p>\n # mysql -u root -p Edit configuration file \/etc\/roundcubemail\/db.inc.php<\/em> to set the parameters to access the database<\/strong>.<\/p>\n # vi \/etc\/roundcubemail\/db.inc.php<\/span><\/p>\n Edit the file \/etc\/roundcubemail\/main.inc.php to set the hostname chosen to perform the login<\/strong>.<\/p>\n # vi \/etc\/roundcubemail\/main.inc.php<\/span><\/p>\n To make the system accessible<\/strong> outside the server, edit the file \/etc\/httpd\/conf.d\/roundcubemail.conf<\/em> and set the correct parameter.<\/p>\n # vi \/etc\/httpd\/conf.d\/roundcubemail.conf<\/span><\/p>\n Edit the \/etc\/php.ini<\/em> file and set the time zone<\/strong>.<\/p>\n Because the log could report errors related to encryption<\/strong>, set the correct encryption parameter.<\/p>\n # vi \/etc\/php.d\/mcrypt.ini<\/span><\/p>\n Restart Apache.<\/p>\n # service httpd restart<\/span><\/p>\n <\/p>\n Access Roundcube typing from your browser the address:<\/p>\n http:\/\/IP_address\/roundcubemail<\/span><\/p><\/blockquote>\n Enter your credential then click Login<\/strong>.<\/p>\n The main screen<\/strong> appears showing the email received when Postfix was previously tested.<\/p>\n <\/p>\n To make Postfix administration easier<\/strong>, the Postfix admin is a web-based tool used to manage mailboxes, virtual domains and aliases.<\/p>\n If not already present in the system, install the PHP component<\/strong> needed by the application.<\/p>\n # yum install php-imap<\/span><\/p>\n Access MySQL and create the database<\/strong> used by Postfix Admin.<\/p>\n # mysql -u root -p<\/span><\/p>\n Using the wget<\/em> command, download<\/strong> the latest release of the application.<\/p>\n # wget http:\/\/downloads.sourceforge.net\/project\/postfixadmin\/postfixadmin\/postfixadmin-2.3.6\/postfixadmin-2.3.6.tar.gz<\/span><\/p>\n Extract the content and move the directory<\/strong> to \/var\/www\/html<\/em> folder.<\/p>\n # tar -vxzf postfixadmin-2.3.6.tar.gz Edit the configuration file \/var\/www\/html\/postfixadmin\/config.inc.php<\/em> to enable the application<\/strong> and set the password.<\/p>\n # vi \/var\/www\/html\/postfixadmin\/config.inc.php<\/span><\/p>\n Set the correct parameters to access the database<\/strong> previously created.<\/p>\n Add the following line to allow the creation of the administration password<\/strong>.<\/p>\n Restart Apache.<\/p>\n # service httpd restart<\/span><\/p>\n To execute the Postfix Admin Setup Checker<\/strong>, type in your browser the address:<\/p>\n http:\/\/IP_address\/postfixadmin\/setup.php<\/span><\/p><\/blockquote>\n Change the setup password<\/strong>.<\/p>\n Create the Superadmin account<\/strong> by filling the fields at the bottom of the screen. Click Add Admin<\/strong>.<\/p>\n The Superadmin account is then created.<\/p>\n To access the Administration interface<\/strong>, type in your browser the address:<\/p>\n http:\/\/IP_address\/postfixadmin<\/span><\/p><\/blockquote>\n The Postfix Admin main screen.<\/p>\n <\/p>\n If the corporate network has an antispam system to check inbound and outbound emails<\/strong>, Postfix needs to be configured in order to relay the emails<\/strong> to the antispam.<\/p>\n To allow the correct emails flow<\/strong>, set the relayhost<\/strong> field with the address of the antispam system.<\/p>\n # vi \/etc\/postfix\/main.cf<\/span><\/p>\n The mail server is now up and running with the basic functions to properly manage email<\/strong> messages.<\/p>\n A working mail server can be configured using Postfix (MTA) with the addition of some components like Dovecot (IMAP) and Roundcube (webmail). Combining these applications we obtain an email system with SMTP, IMAP, POP3 protocols that can be used in a corporate environment where the budget is pretty limited. This solution is based on Open Source software where no licenses need to be purchased for its use.<\/p>\n","protected":false},"author":3,"featured_media":7110,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"rop_custom_images_group":[],"rop_custom_messages_group":[],"rop_publish_now":"initial","rop_publish_now_accounts":{"linkedin_93tdZWzMZc_93tdZWzMZc":"","facebook_2879994398731222_17841400390232720":"","twitter_113568041_113568041":"","mastodon_115463926174894442_115463926174894442":""},"rop_publish_now_history":[],"rop_publish_now_status":"pending","footnotes":""},"categories":[650,534],"tags":[591,618,619],"class_list":["post-7109","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-mail-services-en","category-messaging-en","tag-centos-6-en","tag-mail-server-en","tag-postfix-en","has_thumb"],"_links":{"self":[{"href":"https:\/\/nolabnoparty.com\/en\/wp-json\/wp\/v2\/posts\/7109","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/nolabnoparty.com\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/nolabnoparty.com\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/nolabnoparty.com\/en\/wp-json\/wp\/v2\/users\/3"}],"replies":[{"embeddable":true,"href":"https:\/\/nolabnoparty.com\/en\/wp-json\/wp\/v2\/comments?post=7109"}],"version-history":[{"count":0,"href":"https:\/\/nolabnoparty.com\/en\/wp-json\/wp\/v2\/posts\/7109\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/nolabnoparty.com\/en\/wp-json\/wp\/v2\/media\/7110"}],"wp:attachment":[{"href":"https:\/\/nolabnoparty.com\/en\/wp-json\/wp\/v2\/media?parent=7109"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/nolabnoparty.com\/en\/wp-json\/wp\/v2\/categories?post=7109"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/nolabnoparty.com\/en\/wp-json\/wp\/v2\/tags?post=7109"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}Prerequisites<\/h2>\n
\n
![\"postfix02\"](\"https:\/\/nolabnoparty.com\/wp-content\/uploads\/2013\/06\/postfix02.jpg\" "\\"postfix02\\"")
<\/p>\nInstall Postfix<\/h2>\n
![\"postfix03\"](\"https:\/\/nolabnoparty.com\/wp-content\/uploads\/2013\/06\/postfix03.jpg\" "\\"postfix03\\"")
<\/p>\nmyhostname = hostname.domain.com \r\nmydomain = domain.com \r\nmyorigin = $mydomain \r\ninet_interfaces = all \r\nmydestination = $myhostname, localhost.$mydomain, localhost, $mydomain \r\nmynetworks = 192.168.1.0\/24, 127.0.0.0\/8 \r\nhome_mailbox = Maildir\/<\/pre>\n
myhostname = hostname.domain.com \r\nmydomain = domain.com \r\nmyorigin = $mydomain<\/pre>\n
![\"postfix04\"](\"https:\/\/nolabnoparty.com\/wp-content\/uploads\/2013\/06\/postfix04.jpg\" "\\"postfix04\\"")
<\/p>\ninet_interfaces = all<\/pre>\n
![\"postfix05\"](\"https:\/\/nolabnoparty.com\/wp-content\/uploads\/2013\/06\/postfix05.jpg\" "\\"postfix05\\"")
<\/p>\nmydestination = $myhostname, localhost.$mydomain, localhost, $mydomain<\/pre>\n
![\"postfix06\"](\"https:\/\/nolabnoparty.com\/wp-content\/uploads\/2013\/06\/postfix06.jpg\" "\\"postfix06\\"")
<\/p>\nmynetworks = 192.168.1.0\/24, 127.0.0.0\/8<\/pre>\n
![\"postfix07\"](\"https:\/\/nolabnoparty.com\/wp-content\/uploads\/2013\/06\/postfix07.jpg\" "\\"postfix07\\"")
<\/p>\nhome_mailbox = Maildir\/<\/pre>\n
![\"postfix08\"](\"https:\/\/nolabnoparty.com\/wp-content\/uploads\/2013\/06\/postfix08.jpg\" "\\"postfix08\\"")
<\/p>\n
\n# service postfix start<\/span><\/p>\n![\"postfix09\"](\"https:\/\/nolabnoparty.com\/wp-content\/uploads\/2013\/06\/postfix09.jpg\" "\\"postfix09\\"")
<\/p>\nTesting Postfix<\/h4>\n
Trying ::1... \r\nConnected to localhost. \r\nEscape character is '^]'. \r\n220 server.domain.com ESMTP Postfix \r\nehlo localhost \r\n250-server.domain.com \r\n250-PIPELINING \r\n250-SIZE 10240000 \r\n250-VRFY \r\n250-ETRN \r\n250-ENHANCEDSTATUSCODES \r\n250-8BITMIME \r\n250 DSN \r\nmail from: username@domain.com\r\n250 2.1.0 Ok \r\nrcpt to: username@domain.com\r\n250 2.1.5 Ok \r\ndata \r\n354 End data with <CR><LF>.<CR><LF> \r\ntest\r\n.\r\n250 2.0.0 Ok: queued as 2C55A94 \r\nquit\r\n221 2.0.0 Bye \r\nConnection closed by foreign host.<\/pre>\n
![\"postfix10\"](\"https:\/\/nolabnoparty.com\/wp-content\/uploads\/2013\/06\/postfix10.jpg\" "\\"postfix10\\"")
<\/p>\n
\n# ll
\n# cat xxxxx.xxxxx.server.domain.com<\/span><\/p>\n![\"postfix11\"](\"https:\/\/nolabnoparty.com\/wp-content\/uploads\/2013\/06\/postfix11.jpg\" "\\"postfix11\\"")
<\/p>\nInstall Dovecot<\/h2>\n
![\"postfix12\"](\"https:\/\/nolabnoparty.com\/wp-content\/uploads\/2013\/06\/postfix12.jpg\" "\\"postfix12\\"")
\nEdit the configuration file \/etc\/dovecot\/dovecot.conf <\/em>to enable the needed protocols<\/strong>.<\/p>\nprotocols = imap pop3 lmtp<\/pre>\n
![\"postfix13\"](\"https:\/\/nolabnoparty.com\/wp-content\/uploads\/2013\/06\/postfix13.jpg\" "\\"postfix13\\"")
<\/p>\nmail_location = maildir:~\/Maildir<\/pre>\n
![\"postfix14\"](\"https:\/\/nolabnoparty.com\/wp-content\/uploads\/2013\/06\/postfix14.jpg\" "\\"postfix14\\"")
\nEdit the file \/etc\/dovecot\/conf.d\/10-auth.conf<\/em> and set the following parameters:<\/p>\ndisable_plaintext_auth = no<\/pre>\n
![\"postfix15\"](\"https:\/\/nolabnoparty.com\/wp-content\/uploads\/2013\/06\/postfix15.jpg\" "\\"postfix15\\"")
<\/p>\nauth_mechanisms = plain login<\/pre>\n
![\"postfix16\"](\"https:\/\/nolabnoparty.com\/wp-content\/uploads\/2013\/06\/postfix16.jpg\" "\\"postfix16\\"")
<\/p>\nunix_listener auth-userdb { \r\n\u00a0\u00a0\u00a0 #mode = 0600 \r\n\u00a0\u00a0\u00a0 user = postfix \r\n\u00a0\u00a0\u00a0 group = postfix \r\n}<\/pre>\n![\"postfix17\"](\"https:\/\/nolabnoparty.com\/wp-content\/uploads\/2013\/06\/postfix17.jpg\" "\\"postfix17\\"")
<\/p>\n
\n# service dovecot start<\/span><\/p>\n![\"postfix18\"](\"https:\/\/nolabnoparty.com\/wp-content\/uploads\/2013\/06\/postfix18.jpg\" "\\"postfix18\\"")
<\/p>\nTesting Dovecot<\/h4>\n
Trying ::1... \r\nConnected to localhost. \r\nEscape character is '^]'. \r\n+OK Dovecot ready. \r\nuser admin \r\n+OK \r\npass password \r\n+OK Logged in. \r\nlist\r\n+OK 1 messages: \r\n1 477 \r\n. \r\nretr 1 \r\n+OK 477 octets \r\nReturn-Path: <username@domain.com> \r\nX-Original-To: username@domain.com \r\nDelivered-To: username@domain.com \r\nReceived: from localhost (localhost [IPv6:::1]) \r\nby server.domain.com (Postfix) with ESMTP id 2C55A94 \r\nfor username@domain.com; Wed, 12 Jun 2013 12:22:00 +0200 (CEST) \r\nMessage-Id: <20130207113547.117113FF18@server.domain.com> \r\nDate: Wed, 12 Jun 2013 12:22:00 +0200 (CEST) \r\nFrom: username@domain.com \r\nTo: undisclosed-recipients:; \r\ntest postfix \r\n. \r\nquit\r\n+OK Logging out. \r\nConnection closed by foreign host.<\/pre>\n
![\"postfix19\"](\"https:\/\/nolabnoparty.com\/wp-content\/uploads\/2013\/06\/postfix19.jpg\" "\\"postfix19\\"")
<\/p>\nInstall Roundcube<\/h2>\n
![\"postfix20\"](\"https:\/\/nolabnoparty.com\/wp-content\/uploads\/2013\/06\/postfix20.jpg\" "\\"postfix20\\"")
<\/p>\n
\n# service mysqld start
\n<\/span><\/p>\n
\n# service httpd start<\/span><\/p>\nInstall EPEL repository<\/h4>\n
\n# rpm -ivh epel-release-6-8.noarch.rpm<\/span><\/p>\n![\"postfix21\"](\"https:\/\/nolabnoparty.com\/wp-content\/uploads\/2013\/06\/postfix21.jpg\" "\\"postfix21\\"")
<\/p>\n![\"postfix22\"](\"https:\/\/nolabnoparty.com\/wp-content\/uploads\/2013\/06\/postfix22.jpg\" "\\"postfix22\\"")
<\/p>\nConfigure MySQL<\/h4>\n
\n<\/span><\/p>\nmysql> create database roundcube; \r\nmysql> create user roundcube; \r\nmysql> GRANT ALL PRIVILEGES ON roundcube.* TO roundcube@localhost IDENTIFIED BY 'password'; \r\nmysql> flush privileges; \r\nmysql> use roundcube; \r\nmysql> source \/usr\/share\/doc\/roundcubemail-0.8.6\/SQL\/mysql.initial.sql \r\nmysql> quit<\/pre>\n
![\"postfix23\"](\"https:\/\/nolabnoparty.com\/wp-content\/uploads\/2013\/06\/postfix23.jpg\" "\\"postfix23\\"")
<\/p>\n$rcmail_config['db_dsnw'] = 'mysql:\/\/roundcube:password@localhost\/roundcube';<\/pre>\n
![\"postfix24\"](\"https:\/\/nolabnoparty.com\/wp-content\/uploads\/2013\/06\/postfix24.jpg\" "\\"postfix24\\"")
<\/p>\n$rcmail_config['default_host'] = 'localhost';<\/pre>\n
![\"postfix25\"](\"https:\/\/nolabnoparty.com\/wp-content\/uploads\/2013\/06\/postfix25.jpg\" "\\"postfix25\\"")
<\/p>\nAllow from all<\/pre>\n
![\"postfix26\"](\"https:\/\/nolabnoparty.com\/wp-content\/uploads\/2013\/06\/postfix26.jpg\" "\\"postfix26\\"")
<\/p>\n![\"postfix27\"](\"https:\/\/nolabnoparty.com\/wp-content\/uploads\/2013\/06\/postfix27.jpg\" "\\"postfix27\\"")
<\/p>\nextension=mcrypt.so<\/pre>\n
![\"postfix28\"](\"https:\/\/nolabnoparty.com\/wp-content\/uploads\/2013\/06\/postfix28.jpg\" "\\"postfix28\\"")
<\/p>\nTesting Roundcube<\/h4>\n
![\"postfix29\"](\"https:\/\/nolabnoparty.com\/wp-content\/uploads\/2013\/06\/postfix29.jpg\" "\\"postfix29\\"")
<\/p>\n![\"postfix30\"](\"https:\/\/nolabnoparty.com\/wp-content\/uploads\/2013\/06\/postfix30.jpg\" "\\"postfix30\\"")
<\/p>\nInstall Postfix Admin<\/h2>\n
mysql> create database postfixadmin; \r\nmysql> grant all privileges on postfixadmin.* to postfixadmin@'localhost' identified by 'password'; \r\nmysql> flush privileges; \r\nmysql> quit<\/pre>\n
![\"postfix31\"](\"https:\/\/nolabnoparty.com\/wp-content\/uploads\/2013\/06\/postfix31.jpg\" "\\"postfix31\\"")
<\/p>\n![\"postfix32\"](\"https:\/\/nolabnoparty.com\/wp-content\/uploads\/2013\/06\/postfix32.jpg\" "\\"postfix32\\"")
<\/p>\n
\n# mv postfixadmin-2.3.6 \/var\/www\/html\/postfixadmin<\/span><\/p>\n![\"postfix33\"](\"https:\/\/nolabnoparty.com\/wp-content\/uploads\/2013\/06\/postfix33.jpg\" "\\"postfix33\\"")
![\"postfix36\"](\"https:\/\/nolabnoparty.com\/wp-content\/uploads\/2013\/06\/postfix36.jpg\" "\\"postfix36\\"")
<\/p>\n$CONF['configured'] = true; \r\n$CONF['setup_password'] = 'password';<\/pre>\n
![\"postfix34\"](\"https:\/\/nolabnoparty.com\/wp-content\/uploads\/2013\/06\/postfix34.jpg\" "\\"postfix34\\"")
<\/p>\n$CONF['database_type'] = 'mysqli'; \r\n$CONF['database_host'] = 'localhost'; \r\n$CONF['database_user'] = 'postfixadmin'; \r\n$CONF['database_password'] = 'password'; \r\n$CONF['database_name'] = 'postfixadmin';<\/pre>\n
![\"postfix35\"](\"https:\/\/nolabnoparty.com\/wp-content\/uploads\/2013\/06\/postfix35.jpg\" "\\"postfix35\\"")
<\/p>\n$CONF['setup_password'] = '8abd38580e77ebf7010eb60b95eb4fad:0bd829114d9efc4bc35c7e42cf7d3507dad8b837';<\/pre>\n
![\"postfix36\"](\"https:\/\/nolabnoparty.com\/wp-content\/uploads\/2013\/06\/postfix361.jpg\" "\\"postfix36\\"")
<\/p>\n![\"postfix37\"](\"https:\/\/nolabnoparty.com\/wp-content\/uploads\/2013\/06\/postfix37.jpg\" "\\"postfix37\\"")
<\/p>\n![\"postfix38\"](\"https:\/\/nolabnoparty.com\/wp-content\/uploads\/2013\/06\/postfix38.jpg\" "\\"postfix38\\"")
<\/p>\n![\"postfix39\"](\"https:\/\/nolabnoparty.com\/wp-content\/uploads\/2013\/06\/postfix39.jpg\" "\\"postfix39\\"")
<\/p>\n![\"postfix40\"](\"https:\/\/nolabnoparty.com\/wp-content\/uploads\/2013\/06\/postfix40.jpg\" "\\"postfix40\\"")
<\/p>\n![\"postfix41\"](\"https:\/\/nolabnoparty.com\/wp-content\/uploads\/2013\/06\/postfix41.jpg\" "\\"postfix41\\"")
<\/p>\n![\"postfix42\"](\"https:\/\/nolabnoparty.com\/wp-content\/uploads\/2013\/06\/postfix42.jpg\" "\\"postfix42\\"")
<\/p>\nSending emails through a relay<\/h2>\n
relayhost= lx-antispam02.nolabnoparty.local<\/pre>\n
![\"postfix43\"](\"https:\/\/nolabnoparty.com\/wp-content\/uploads\/2013\/06\/postfix43.jpg\" "\\"postfix43\\"")
<\/p>\n![\"\"](\"https:\/\/nolabnoparty.com\/wp-content\/uploads\/images\/firma.jpg\" "\\"\\"")
<\/p>\n","protected":false},"excerpt":{"rendered":"