====== Important Postfix Settings ======
===== When using as SMTP relay for other servers on LAN  =====
Make sure to set ''inet_interfaces = all''

Sometimes this is set to localhost and will not allow relays

Make sure to set ''mynetworks = 127.0.0.0/8 192.168.0/28''

So the Local LAN is covered

===== As SMTP Server =====
Set mydomain & myhostname 
<code>
mydomain = mail.dev06.example.org
myhostname = mail.dev06.example.org
myorigin = $mydomain
append_dot_mydomain = no
relayhost =
</code>