packages:postfix [LMDE journeys]

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====== Differences ====== This shows you the differences between two versions of the page.

--- packages:postfix [2014/02/07 04:07]
admin [Install Postfix]
+++ packages:postfix [2014/02/07 05:00] (current)
admin [Test Postfix]
@@ Line 12: / Line 12: @@
 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?200|}}
+{{ :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 =====
+You should nbow be able to send mail to the outside world using Postfix:
+<code>
+telnet localhost 25
+</code>
+You should see:
+<code>
+Trying 127.0.0.1...
+Connected to localhost.localdomain.
+Escape character is '^]'.
+server1.example.com ESMTP Postfix (Debian/GNU)
+</code>
+Send an email to a test recipient:
+<code>
+mail from:<you@youremail.com>
+rcpt to:<user@example.com>
+data
+To: user@example.com
+From: you@youremail.com
+Subject: Hey my first email
+This is my first email on debian postfix after installing configuring it.
+It was easy.
+</code>
+To end data hit enter, type in a dot, and hit enter again:
+<code>
+.
+</code>
+Quit the session:
+<code>
+quit
+</code>