Hi
This is more of a big-picture, how-to-use Postfix question instead of just a
technical question. I hope someone can help.
We currently have 3 mail servers in place -- 1 Zimbra, 1 Microsoft Exchange & 1
CommuniGate.
It's a mess and a real pain to administer. Especially if you want to make
changes that are global. I suppose I could start tying LDAPs together but IMO
that's making things worse, not better.
My 'better' plan is to eventually consolidate all the mail services on a
'pure', upstream Postfix+Dovecot system.
I already have a (persoanl) working Postfix system up & running. It's really
simple & straightforward and works great. But, right now it's all on one box,
with single instance of Postfix.
For this company mess, I'm learning about multiple/split instances, load
balancing etc.
I 1st have a question about using a 'remote' single instance of Postfix to
'frontend' all three servers.
I'm pretty sure I *can* do it, but I admit I'm kindof lost picking out the
right setup. There are LOTS of flexible options in Postfix!
I'd like to 1st get to a single instance of Postfix working like a gateway,
accepting and sending mail to & from all the current servers+domains.
Instead of
'net <-> (Public Static IP #1) Server1/domain1
'net <-> (Public Static IP #2) Server2/domain2
'net <-> (Public Static IP #3) Server3/domain3
I'd like to get to
'net
<--> (Public Static IP #4) Postfix domain[1,2,3] (Postscreen +
some
(Public Static IP #5) Recipient &
Sender restrictions)
<- domain1 -> (Private Dynamic IP #1) Server1/domain1
<- domain2 -> (Private Dynamic IP #2) Server2/domain2
<- domain3 -> (Private Dynamic IP #3) Server3/domain3
I'd like to do this with
(1) minimal changes to the 3 current servers
(2) the Postfix system storing, then later forwarding, inbound mail if the
Postfix -> domainX connection is ever down
(3) the Postfix system storing, then later sending, outbound mail if the
Postfix -> 'net connection is ever down
I hope that's clear enough. I can explain more or differently if you jave any
particular questions.
I guess the right question for me here is -- can I do this? SHOULD I do it this
way?
THanks!
Roger
