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packages:postfix [2014/02/07 04:00] admin created |
packages:postfix [2014/02/07 04:54] admin [Relay Authentification] |
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| sudo apt-get install postfix | sudo apt-get install postfix | ||
| </code> | </code> | ||
| + | |||
| + | You'll be asked what type of installation you'd like to setup. In this example we'll go for an external relay, so , when asked, we choose "Internet with smathost" as the installation option. | ||
| + | {{ :packages:postfix:install-type.png?direct&200 |}} | ||
| + | |||
| + | You'll then be prompted to enter a domain name that will be used to qualify addresses WITHOUT A DOMAIN NAME, enter an adequate domain name here. Do this so others cannot abuse your mail system. You can later change this value using: | ||
| + | <code> | ||
| + | sudo postconf -e "myorigin = domainname.tld" | ||
| + | </code> | ||
| + | |||
| + | This value will be saved in// /etc/mailname/ //. | ||
| + | |||
| + | Also a default relay host will be asked, leave it blank to route your mails directly to the SMTP service of the target address. | ||
| + | |||
| + | ===== Configure Postfix ===== | ||
| + | |||
| + | Your hostname (computer name) can be set with the following command. (Use command "hostname" at the command-line to display your hostname if not sure.) | ||
| + | <code> | ||
| + | postconf -e "myhostname=server1.example.com" | ||
| + | </code> | ||
| + | |||
| + | Add the domain names that your system will handle. | ||
| + | <code> | ||
| + | postconf -e "relay_domains = example.com, example2.com, example3.com" | ||
| + | </code> | ||
| + | |||
| + | Reload Postfix Server: | ||
| + | <code> | ||
| + | postfix reload | ||
| + | </code> | ||
| + | |||
| + | ===== Relay Authentification ===== | ||
| + | If your relay host requires authentication, or blocks port 25, you'll need to further configure Postfix: | ||
| + | |||
| + | <code> | ||
| + | apt-get install libsasl2-modules | ||
| + | </code> | ||
| + | |||
| + | <code> | ||
| + | postconf -e "relayhost = [smtp.domainname.tld]:587" | ||
| + | postconf -e "smtp_sasl_auth_enable = yes" | ||
| + | postconf -e "smtp_sasl_password_maps = hash:/etc/postfix/sasl_passwd" | ||
| + | postconf -e "smtp_sasl_security_options = noanonymous" | ||
| + | </code> | ||
| + | |||
| + | Create a file called sasl_passwd in// /etc/postfix/sasl_passwd//. Inside type in | ||
| + | <code> | ||
| + | sudo nano /etc/postfix/sasl_passwd | ||
| + | |||
| + | [smtp.domainname.tld]:587 username@domainnanme.tld:mypassword | ||
| + | </code> | ||
| + | |||
| + | Now change permissions so others can't read it: | ||
| + | <code> | ||
| + | chmod 600 /etc/postfix/sasl_passwd | ||
| + | </code> | ||
| + | |||
| + | Now postmap it. (It creates a database-like file so postfix can read it.) | ||
| + | <code> | ||
| + | postmap /etc/postfix/sasl_passwd | ||
| + | </code> | ||
| + | |||
| + | Restart postfix | ||
| + | <code> | ||
| + | postfix reload | ||
| + | </code> | ||
| + | |||
| + | Done. You can use "mutt" to send emails outside. Check /var/log/mail.log to see if everything is working. | ||
| + | ===== Test Postfix ===== | ||
| + | |||
