I am very much satisfied with the software - first things first.
Now I wonder, I set up ciphermail as a virtual appliance. Base postfix and ciphermail postfix communicate via VPN GitHub - ntop/n2n: Peer-to-peer VPN.
By default the ciphermail postfix listens to ALL interfaces, which is not needed in my case, since listening to the VPN interface is perfect.
There is a config parameter “inet_interfaces” which can be used for that, but I wonder, should I put it by hand into the ciphermail postfix config file, or is there another predefined solution for that?
Thank you again, Martin.