James B. Byrne: > I began the process of building P-3.0 to the extent of preping a mock > build spec file. However, reading the README file with 3.0 gave me > serious pause. Rightly or wrongly as I read it I began to feel that > 3.0 was not going to be a simple drop in replacement for 2.11. > > Are my anxieties misplaced? Can I just build and package 3.0 as I > have done previously with 2.11 and just install it as a simple (no > configuration changes) update over an existing 2.11 installation?
You leave the old config files in place, install the new Postfix, then do "postfix upgrade-configuration". It is drop-in compatible by default. The backwards compatibility will keep old default settings active until you decide to freeze the old defaults or to adopt the new defaults. Wietse