On 7/21/2015 10:20 AM, Ivan Avery Frey wrote: > What defines a Postfix installation? > > If I were to copy /etc/postfix and /var/spool/postfix to the new > server, would something break?
That should work. You'll likely need to rerun postmap on your indexed files so they match the libraries on the new server. Read all the RELEASE_NOTES. Considerable effort goes in to them, and they should answer most of your upgrade and migration questions. Make sure postfix is stopped when copying files. > > I'm looking for books about Postfix and I have found a 2001 book by > Richard Blum, Postfix (the definitive guide) released in Dec. 2003, > and The Book of Postfix by Ralf Hildebrandt and Patrick Koetter > released in Mar. 2005. > > Is there anything more recent? Could these earlier books lead me astray? I'm not aware of any more recent books. Obviously, new features are not covered in those books, but the general principals and architecture of postfix haven't changed. Because postfix strives to be backward-compatible, any example configs in those books should still work. And I'll mention that although 2.11 is still on the "supported" list, the current stable postfix is version 3.0. -- Noel Jones
