I did 1 not too long ago, but I can't find the config files I
created. Here it is from memory:
In main.cf, add the following line:
smtpd_client_restrictions = check_client_access cidr:allowed_clients,
permit_mynetworks, permit_sasl_authenticated, reject
Create a file called allowed_clients in /etc/postfix containing:
64.18.0.0/20 OK
207.126.144.0/20 OK
The IPs above are the ones that Postini uses. You'll want to add
your internal networks to that, as well.
Nathan
On Jan 25, 2007, at 8:11 AM, Paul Chernoff wrote:
Now that I have a Mac OS X Server mail server running, I would like
to do some additional settings to match settings that I have
created in EIMS. I haven't found this information in Apple's
manuals, but I would be happy for references to where to find this
information in Postfix or Cyrus documentation.
1) I want to restrict the mail servers that this server will accept
e-mail from. We use Postini to filter our e-mail and I want to
ensure that senders are not bypassing Postini by sending mail
directly to my mail servers IP address. In EIMS I have define what
IP addresses and ranges that can access our SMTP service (this is
not the Relay Security setting).
2) If someone is in my LAN they can use port 25 for sending e-mail
through our server, but if they are not on our LAN they should use
port 587. This is done partly to get around various ISPs who block
port 25.
============================
Paul Chernoff
Director of Information Technology
Washingtonian Magazine
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