Hi,
(I believe I have found the problem here and it is unrelated to postfix,
but I would like to confirm a couple of things that are a bit
hazy in the docs. After googling a lot yesterday, this may be a
useful find for someone in the future.)
I got header checks working, but ran into the Catch-22 that the subject
check would not pass for outgoing email, so I found the section of the
manual titled as the subject of this email.
Note that this may be impacted by the effect of the other topic I have
posted on "spontaneous appearance...".
I set up master.cf as described in that section:
1.2.3.5:smtp inet n - n - - smtpd
1.2.3.4:smtp inet n - n - - smtpd
-o receive_override_options=no_header_body_checks
127.0.0.1:smtp inet n - n - - smtpd
-o receive_override_options=no_header_body_checks
pickup fifo n - n 60 1 pickup
-o receive_override_options=no_header_body_checks
After some time, I figured out how (I believe, I'm a C programmer, not a
great admin, so please bear with me) to define 1.2.3.4 and 1.2.3.5
ip addr add 1.2.3.5/16 dev eth0
ip addr add 1.2.3.4/8 dev lo
Question 1) (admin oriented)
Is that ip addr setting sufficient? (Will set up firewall.)
(The relevant post-setting output of ifconfig and ip addr are below.)
Question 2)
What should the settings be in main.cf for:
inet_interfaces (currently "all")
smtp_bind_address (unset: 1.2.3.5??, 172.17.69.230??) (Tried both.)
mynetworks (unset: 172.17.69.230/16, 1.2.3.5/16, 1.2.3.4/8 ??)
Question 3 & 4)
Could this re-routing cause the connection to the relay server to time out?
Does it affect the arguments to, or behaviour of, (postfix's) sendmail?
Thanks,
Dave
Network settings:
$ uname -a
Linux P1234567 2.6.37_PQube_Bob+ #152 PREEMPT Thu Jan 16 14:47:05 PST 2014
armv5tejl GNU/Linux
$ ip addr
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 16436 qdisc noqueue state UNKNOWN
link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
inet 127.0.0.1/8 scope host lo
inet 1.2.3.4/8 scope global lo
2: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state
UP qlen 1000
link/ether xx:yy:zz:11:22:33 brd ff:ff:ff:ff:ff:ff
inet 172.17.69.230/16 brd 172.17.255.255 scope global eth0
inet 1.2.3.5/16 scope global eth0
$ ifconfig
eth0 Link encap:Ethernet HWaddr 56:CE:EC:23:65:10
inet addr:172.17.69.230 Bcast:172.17.255.255 Mask:255.255.0.0
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
...
lo Link encap:Local Loopback
inet addr:127.0.0.1 Mask:255.0.0.0
UP LOOPBACK RUNNING MTU:16436 Metric:1
...
