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howtos:network_services:postfix_dovecot_mysql:postfix [2015/02/16 01:26 (UTC)] astrogeek |
howtos:network_services:postfix_dovecot_mysql:postfix [2018/10/08 02:14 (UTC)] (current) astrogeek [Configuring The Postfix MTA] |
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| - | ===== Installing The Postfix MTA ===== | + | ====== Installing The Postfix MTA ====== |
| - | <note important> | + | This page is supplemental to main article: [[howtos: |
| Postfix is a popular and secure mail transport agent, or MTA. | Postfix is a popular and secure mail transport agent, or MTA. | ||
| Line 41: | Line 41: | ||
| Copy the package file to the target platform if necessary and install: | Copy the package file to the target platform if necessary and install: | ||
| < | < | ||
| - | ===== Configuring The Postfix MTA ===== | + | ====== Configuring The Postfix MTA ====== |
| - | You should | + | |
| + | You must become familiar with the [[http:// | ||
| + | |||
| + | <note important> | ||
| What follows is a minimum configuration to safely operate a virtual email server on the internet, but you will surely want to adapt it to your specific needs. | What follows is a minimum configuration to safely operate a virtual email server on the internet, but you will surely want to adapt it to your specific needs. | ||
| Line 57: | Line 60: | ||
| vi / | vi / | ||
| - | //Uncomment the following lines...// | + | # Uncomment the following lines # |
| smtp inet n | smtp inet n | ||
| submission inet n | submission inet n | ||
| Line 70: | Line 73: | ||
| vi / | vi / | ||
| - | //Now enter the following lines...// | + | # Enter the following lines # |
| mynetworks_style = host | mynetworks_style = host | ||
| myorigin = $mydomain | myorigin = $mydomain | ||
| - | #Change my-domain.com to the actual domain name of your server | + | # Change my-domain.com to the actual domain name of your server |
| mydomain = my-domain.com | mydomain = my-domain.com | ||
| - | # | + | # mydestination must be localhost only to allow postfix to deliver non-virtual system mail # |
| mydestination = localhost | mydestination = localhost | ||
| #IMPORTANT - relay_domains should be empty to prevent your server from becoming a spam relay! | #IMPORTANT - relay_domains should be empty to prevent your server from becoming a spam relay! | ||
| #If you actually need to relay to other domains READ THE DOCUMENTATION CAREFULLY! | #If you actually need to relay to other domains READ THE DOCUMENTATION CAREFULLY! | ||
| - | relay_domains = | + | relay_domains = |
| + | # We have no local users, so no local notifications # | ||
| biff = no | biff = no | ||
| - | append_dot_mydomain = no | ||
| </ | </ | ||
| Now we need to configure the secure aspects of our mail server, again in main.cf: | Now we need to configure the secure aspects of our mail server, again in main.cf: | ||
| - | |||
| < | < | ||
| vi / | vi / | ||
| - | //Enter the following lines...// | + | # Enter the following lines # |
| - | #SSL certificates will be created at these locations when we configure dovecot | + | # SSL certificates will be created at these locations when we configure dovecot |
| smtpd_tls_cert_file = / | smtpd_tls_cert_file = / | ||
| - | smtpd_tls_key_file = /etc/ssl/localcerts/dove.key | + | smtpd_tls_key_file = /etc/ssl/private/dove.key |
| #Accept only secure smtp connections | #Accept only secure smtp connections | ||
| Line 119: | Line 121: | ||
| vi / | vi / | ||
| - | //Enter the following lines...// | + | # Enter the following lines # |
| #Tell postfix to use dovecot lmtp for virtual mail delivery | #Tell postfix to use dovecot lmtp for virtual mail delivery | ||
| Line 129: | Line 131: | ||
| virtual_alias_maps = mysql:/ | virtual_alias_maps = mysql:/ | ||
| - | #Set localhost | + | #Set localhost |
| alias_maps = hash:/ | alias_maps = hash:/ | ||
| </ | </ | ||
| - | The last four files do not yet exist on the system and so, must be created. The virtual | + | The last four files do not yet exist on the system and so, must be created. The files prefixed with " |
| First we must tell postfix how to identify which virtual domains it handles mail for by providing a proper query of the virtual database. This query must return true if the domain is in the database: | First we must tell postfix how to identify which virtual domains it handles mail for by providing a proper query of the virtual database. This query must return true if the domain is in the database: | ||
| Line 140: | Line 142: | ||
| vi / | vi / | ||
| - | //Enter the following lines...// | + | # Enter the following lines # |
| user= mailuser | user= mailuser | ||
| password = {your mailuser password} | password = {your mailuser password} | ||
| - | host = localhost | + | hosts = localhost |
| dbname = mailserver | dbname = mailserver | ||
| query = SELECT 1 FROM virtual_domains WHERE name=' | query = SELECT 1 FROM virtual_domains WHERE name=' | ||
| Line 154: | Line 155: | ||
| This will return true (1) if the domain is found, NULL if not found, and an error message if the query or connection is not correctly configured. | This will return true (1) if the domain is found, NULL if not found, and an error message if the query or connection is not correctly configured. | ||
| + | |||
| + | Also note that other database connection options are available, for example if you are connecting to a remote database server, or multiple servers. See the mysql_table man page from the postfix package for complete connect parameter information. | ||
| Next, we must tell postfix how to identify valid virtual mail box users. This query must also only return true if the mail box exists in the database. | Next, we must tell postfix how to identify valid virtual mail box users. This query must also only return true if the mail box exists in the database. | ||
| Line 160: | Line 163: | ||
| vi / | vi / | ||
| - | //Enter the following lines...// | + | # Enter the following lines # |
| user= mailuser | user= mailuser | ||
| password = {your mailuser password} | password = {your mailuser password} | ||
| - | host = localhost | + | hosts = localhost |
| dbname = mailserver | dbname = mailserver | ||
| query = SELECT 1 FROM virtual_users WHERE email=' | query = SELECT 1 FROM virtual_users WHERE email=' | ||
| Line 178: | Line 180: | ||
| vi / | vi / | ||
| - | //Enter the following lines...// | + | # Enter the following lines # |
| user= mailuser | user= mailuser | ||
| password = {your mailuser password} | password = {your mailuser password} | ||
| - | host = localhost | + | hosts = localhost |
| dbname = mailserver | dbname = mailserver | ||
| query = SELECT destination FROM virtual_aliases WHERE source=' | query = SELECT destination FROM virtual_aliases WHERE source=' | ||
| Line 196: | Line 197: | ||
| vi / | vi / | ||
| - | //Enter the following lines...// | + | # Enter the following lines # |
| postmaster: root | postmaster: root | ||
| - | root: myself | + | root: root |
| </ | </ | ||
| - | After creating the aliases file, you must use the postmap | + | After creating the aliases file, you must use the newaliases |
| - | < | + | < |
| This will create the file / | This will create the file / | ||
| Line 210: | Line 211: | ||
| [[howtos: | [[howtos: | ||
| + | |||
| + | ====== Sources ====== | ||
| + | * Based primarily on [[http:// | ||
| + | * Originally written by [[wiki: | ||
| {{tag> | {{tag> | ||
