On Sun, September 17, 2023 4:45 pm, Patrick Ben Koetter wrote:
Even simplier than that:
$ postconf -d mynetworks
mynetworks = 127.0.0.0/8 192.168.179.0/24 192.168.122.0/24 [::1]/128
[fd00:0:0:1::]/64 [fe80::]/64
On 20.09.23 17:11, li...@sbt.net.au wrote:
that includes 2nd ethernet, eth1, do I need to keep 10.0.12.0/22 ?
# postconf -d mynetworks
mynetworks = 127.0.0.0/8 103.106.168.104/29 10.0.12.0/22 [::1]/128
[fe80::]/64
eth1: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500
inet 10.0.12.3 netmask 255.255.252.0 broadcast 10.0.15.255
inet6 fe80::5054:ff:fe62:28c2 prefixlen 64 scopeid 0x20<link>
ether 52:54:00:62:28:c2 txqueuelen 1000 (Ethernet)
RX packets 78 bytes 5460 (5.3 KiB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 10 bytes 712 (712.0 B)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
You usually need put IP addresses to mynetworks to get special treatment for
those IP addresses.
For postfix you allow unauthenticated relaying from those addresses.
for amavis, it allows e.g. DKIM signing.
adding local IP address, in your case 10.0.12.3 should be fine.
other IP addresses you usually need when your clients send mail without
authentication.
--
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