The Debian package of Postfix offers a "Satellite system" configuration (a list of all the Debian configs at the bottom of this email)
I'm not sure if this is meant to emulate the null client configuration or be something else Anyway, I opened an issue for it in the Debian bug tracker http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=738835 One particular thing I notice about all the configurations offered in Debian is that they all set mydestination using the hostname, e.g. mydestination = host1.example.org, localhost.example.org, host1, localhost instead of leaving mydestination blank. Is there any compelling reason to have these entries in mydestination? Are there other common applications (either in Debian or elsewhere) that are explicitly sending mail to root@$HOSTNAME or root@localhost rather than just the unqualified recipient name root for example? No configuration: Should be chosen to leave the current configuration unchanged. Internet site: Mail is sent and received directly using SMTP. Internet with smarthost: Mail is received directly using SMTP or by running a utility such as fetchmail. Outgoing mail is sent using a smarthost. Satellite system: All mail is sent to another machine, called a 'smarthost', for delivery. Local only: The only delivered mail is the mail for local users. There is no network.
