====== Postfix ======

Before configuring Postfix, make sure you have an IP, hostname and a domain.
For this example I used the IP "10.0.0.152", hostname "Lunetikk" and domain "lunetikk.local"

===== Editing main.cf =====

The Postfix config is located at "/etc/postfix/main.cf" and can be edited with vi.

Line 91 remove comment (#) and insert the FQDN
<code>mydomain = lunetikk.lunetikk.local</code>

Line 107 remove comment so the ending after $ will be the domain
<code>myorigin = $mydomain</code>

Line 268 remove comment and insert your network (keep the comment if you dont want to restrict your network)
<code>mynetworks = 10.0.0.0/24, 127.0.0.0/8</code>

Line 423 remove comment to use Maildir
<code>home_mailbox = Maildir/</code>

Line 671 remove comment and insert FQDN
<code>myhostname = lunetikk.lunetikk.local</code>

Line 675 change to "all", all Interfaces will now be used. If this option is "localhost", Postfix's port 25 will not be contacted by other pcs in the network. 
<code>inet_interfaces = all</code>

Line 683 insert to use Cyrus as mailbox. This service will be installed and configured on the page [[linux:suse:postfix:cyrus|Cyrus]]
<code>mailbox_transport = cyrus</code>

Line 691 change, to check the hostname before sending (spam protection)
<code>smtpd_recipient_restrictions = permit_mynetworks, permit_auth_destination, permit_sasl_authenticated, reject</code>

Line 693 change to "yes" to activate SMTPD authentification  
<code>smtpd_sasl_auth_enable = yes</code>

Line 697 can be changed to resize your mailbox. In this example it is 100MB. 0 = no restriction.
<code>mailbox_size_limit = 102400000</code>

Insert at the bottom of main.cf
<code>smtpd_sasl_security_options = noanonymous
smtpd_sasl_local_domain = $myhostname</code>

Save and start Postfix and saslauthd afterwards
<code>rcsaslauthd start
rcpostfix start</code>

Optional:
To start Postfix and saslauthd on boot
<code>chkconfig postfix on
chkconfig saslauthd on</code>


=>Continue with [[linux:suse:postfix:cyrus|Cyrus]]