I have several machines behind a NAT router which run postfix. Some of these machines are desktop machines with real users who create and send mail while others are (usually headless) servers where the only mail is generally that sent by cron jobs and other similar status information.
All of the status messages from all machines on the network are sent to me on my desktop machine (using /etc/aliases to point all destinations to my E-Mail). Thus I'd like to preserve the (local) name of the sending system in these messages so I can identify where an error message has come from. E.g. I want messages from postmaster/root/cron on my dps server to be distinguishable from similar messages from the server called mws. This means (I think) that I want to set the myorigin parameter to the machine's name on the LAN (e.g. dps.zbmc.eu or mws.zbmc.eu). This is how I have things set at the moment. However for mail going to the outside world (which does get sent from mws.zbmc.eu in particular) I think myorigin should be zbmc.eu as that is how the outside world sees my systems. In addition, having myorigin set to dps.zbmc.eu, mws.zbmc.eu, chris.zbmc.eu means that the mail headers have invalid/unknown host names in the headers as these host names only exist on my LAN. So, is there a way to get what I want? It's surely quite a common situation. -- Chris Green
