On Thu, Jan 13, 2011 at 03:55:31PM -0500, Zhou, Yan wrote:
> I thought my Postfix would only accept messages
> destined to local domains.
>
> What am I missing?
>
> mynetworks = 10.128.61.0/24, 10.128.12.0/24, 127.0.0.0/8
Clients with the IP addresses above,
> sample_directory = /usr/share/doc/postfix-2.3.3/samples
> sendmail_path = /usr/sbin/sendmail.postfix
> setgid_group = postdrop
> unknown_local_recipient_reject_code = 550
can send outbound email, because you do not specify any non-default SMTP
access controls, and the default is to permit outbound mail from clients
in $mynetworks.
Note that local submission via sendmail(1) is not subject to the SMTP
access lists, so if you want to disable that too, set:
default_transport = error:5.1.2 Mail to remote domains not permitted
This still allows mail to off-host "relay" domains, which use
$relay_transport.
--
Viktor.
