Hi Richard,
I think its better balance with a router too. Is there any problem with use postfix+amavis in the front-end? I did not understand what the advantage of use dovecot LMTP with director too.
On 07/25/2014 01:58 AM, Richard Hector wrote:
On 25/07/14 15:30, Eduardo Ramos wrote:
Hi Richard,
In fact I thought it a little confusing. I had some bad experience with DNS RR when one of my IMAP server got down. Clients continued trying connect to broken server and it caused some problems. But when everything is ok, it works well.
I drew a diagram with my idea. What do you think?
https://dl.dropboxusercontent.com/u/41373531/mail.png Interesting, thanks. I'd forgotten to draw in the director ring.
As I said, if we need load balancing we can do that on the router, which as I understand it will do more or less the same thing as LVS. It might be Cisco SLB, but I'm not sure; I'm not the router guy :-)
But what interests me most is that your diagram shows the mx servers connecting directly to the backend servers, rather than going through the proxy director - I thought that was a no-no. Oh, and I don't think we want to load down our front-end MX servers with amavis, either.
Thanks for your input :-)
Richard