Beautiful; works as expected. Thanks, Till!
While I'm thinking of it, do you know of any way to specify these types of directives as "user-level" configuration options for Postfix?
The reason I ask is http://bugtracker.ispconfig.org/inde...s&task_id=1970
. I am trying to move my custom configuration options outside of ISPConfig's reach, so that reconfiguring services during upgrades poses no risk.