On 26 Mar 2013, at 6:51, Gaby L wrote:
Hi
My teoretic question is how configure multiple (distributed) postfix
mail servers for one domain,which can load balance tasks? (e.g
gmail),but all servers same (unique) users list,alias,rules for one
domain?
As Dr. Venema's answer implies, splitting up functions (especially
non-Postfix functions) between different sets of machines is the first
step, as it is easier to distribute limited subsets of work across many
machines than to replicate everything on every box and keep them all
coherent. A corollary of this is that you need to start by
understanding what your "Postfix mail server" actually is doing.
Inbound, outbound, and internal mail can be split apart between distinct
Postfix configurations, while access to delivered mail (i.e. IMAP, POP,
or webmail) is a non-Postfix function that is inherently the most
difficult part of a "mail server" to distribute across many nodes.
Because large-scale "mail servers" aren't all "large" in the same way,
how one should split up and replicate functionality between machines is
dependent on the details of what the whole system is doing.
