On Jan 25, 2007, at 11:11 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.
For the record, you're asking for fairly advanced Postfix
configuration information (this has nothing to do with Cyrus). You
might have better luck finding answers to these types of questions on
a Postfix-specific mailing list or on the postfix.org web site.
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).
I believe you can accomplish this with the smtpd_sender_restrictions
parameter in /etc/postfix/main.cf. You should be able to use a hash
file containing the IPs/networks from which you want to allow
connections. Though you might find this easier to accomplish at an
TCP/IP (that is, firewall) level.
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.
You can modify /etc/postfix/master.cf and enable the entries for the
submission port. That will enable 587.
Remember that you must reload Postfix after making any changes. You
can do that using "sudo postfix reload" or through the Server Admin
tool.
--
Jason Deraleau (email@hidden)
IT Professional (MCSE, ACPT, Linux+ SME)
Homepage: http://www.lifehertz.com
