##################################################################################
				Postfix
##################################################################################


 Config		 : /etc/postfix/main.cf

 To apply changes: #postfix reload


##################################################################################
[/etc/postfix/main.cf]

    myhostname = host.local.domain (machine name is not FQDN)
    myhostname = host.virtual.domain (virtual interface)
    myhostname = virtual.domain (virtual interface)

    mydomain = local.domain
    mydomain = virtual.domain (virtual interface)

 #Outbound mail:
    myorigin = $myhostname (default: send mail as "user@$myhostname")
    myorigin = $mydomain   (probably desirable: "user@$mydomain")

 #Default:
  >  mydestination = $myhostname, localhost.$mydomain, localhost
 #Domain wide:
  >   mydestination = $myhostname, localhost.$mydomain, localhost, $mydomain
 #Host with multiple DNS A records:
  >  mydestination = $myhostname, localhost.$mydomain, localhost, 
  >      www.$mydomain ftp.$mydomain

 #Mail Relay from:
    mynetworks_style = host|subnet|class  (default: authorize "subnet")
    mynetworks = 127.0.0.0/8   (safe: authorize local machine only)
    mynetworks = 127.0.0.0/8 168.100.189.2/32 (authorize local machine) 

 #Mail Relay to:
    relay_domains = $mydestination (default)
    relay_domains =           (safe: never forward mail from strangers)
    relay_domains = $mydomain (forward mail to my domain and subdomains)

 #Delivery method
    relayhost =                   (default: direct delivery to Internet)
    relayhost = $mydomain         (deliver via local mailhub)
    relayhost = [mail.$mydomain]  (deliver via local mailhub)
    relayhost = [mail.isp.tld]    (deliver via provider mailhub)

 #Notify only serious problems
    notify_classes = resource, software

 #If host is behind FW NAT
    proxy_interfaces = 200.200.200.4 (the proxy/NAT external network address)

[/etc/aliases]
    postmaster: you
    root: you

 #newaliases <- To apply aliases changes
 #postconf alias_maps   <- To verify

Check Logs:
----------
# postfix check
# egrep '(reject|warning|error|fatal|panic):' /some/log/file


--------------------------------------------------------------------------------
Hugo Martin						www.hackcraft.com (2006)