Hi There,

We have a CentOS 7 Server that is running several KVMs of both CentOS 7 and
CentOS 8.  We have a CentOS 7/Postfix KVM running as a production mail
server in this environment.

I am trying to build a CentOS 8/Postfix KVM -- but run into an error on
reboot.  Here is the full error:

fatal: parameter inet_interfaces: no local interface found for 10.81.198.165

Postfix is only listening on the private network and localhost.  This is
specified in main.cf using:

#   listen on the private network and localhost
inet_interfaces = 10.81.198.165, 127.0.0.1


The KVM has bridged interfaces to DOM0 for both the Private (ens3) & Public
(ens4) networks.  Here is what "ip addr" looks like for ens3:

2: ens3: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc fq_codel state UP
group default qlen 1000
    link/ether 52:54:00:61:1c:20 brd ff:ff:ff:ff:ff:ff
    inet 10.81.198.165/27 brd 10.81.198.191 scope global noprefixroute ens3
       valid_lft forever preferred_lft forever
    inet6 fe80::687f:d0c7:d4fc:8b69/64 scope link noprefixroute
       valid_lft forever preferred_lft forever


It is interesting to note the following:

   - If I "systemctl restart postfix", the restart will happen successfully.
   - If I reboot the KVM, I will see the error above after the reboot
   - I have tried changing Postfix and System configuration to get around
   this -- no luck so far.

Thanks in advance, Greg
www.RayStedman.org

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