Multiple servers and NFS

Eduardo Ramos eduardo at
Fri Jul 25 14:12:30 UTC 2014

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?
> 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

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