On 12/14/12 01:43, Muhammad Yousuf Khan wrote:
i am confuse about the utilization of directives: "mynetwork" and
"mynetwork_style"
is "mynetwork" directive completely dependent on "mynetwork_style".
can i use only "mynetwork" for relaying messages or i always have to
use "mynetwork_style" along with "mynetwork" to allow relaying to
particular host or subnet.
thanks in advance.
mynetworks and mynetworks_style are essentially mutually exclusive; you
use either one or the other. If you specify mynetworks, mynetworks_style
is ignored. Each is used to specify SMTP clients that are "trusted" by
the server based on their IP address. mynetworks_style is used to
specify trusted clients based on their relationship to the server's IP
address, while mynetworks is specifies trusted clients by explicitly
giving their IP addresses or an IP address range. For example,
specifying "mynetworks_style = subnet" indicates that all clients in
that subnet are trusted, while mynetworks = 50.116.33.0/24 might be used
instead to say the same thing (if 50.116.33.0/24 describes your subnet).
These clients are "trusted" because the mynetworks (or mynetworks_style)
parameter is used by smtpd to determine who is allowed to relay mail
when the smtpd_relay_restrictions parameter contains
"permit_mynetworks." If you haven't changed smtpd_relay_restrictions in
your config, it defaults to "permit_mynetworks,
reject_unauth_destination," which will allow those clients listed in
mynetworks (or mynetworks_style) to relay mail. You only need to use
mynetworks OR mynetworks_style (but not both) to enable relaying from
certain clients.
Read the documentation when you get confused. It is explained quite
clearly here:
http://www.postfix.org/postconf.5.html#mynetworks
http://www.postfix.org/postconf.5.html#mynetworks_style
http://www.postfix.org/postconf.5.html#smtpd_relay_restrictions
-Will
