Re: [exim] What's the performance benchmark of Exim4?

Hi Ian,

I think you mean outbound sending emails.
How do you handle inbound messages for local users?
If you store emails to local server, then you should split the user
accounts to different servers.
How do you store local emails?
Do you store local emails in NAS, then map to each server?
Or do you use Dovecot, let Exim4 transfer to Dovecot or Exim4 store to
disk directly?
Thanks a lot!


On Fri, Aug 23, 2013 at 5:36 PM, Ian Eiloart <iane@???> wrote:

>
> On 23 Aug 2013, at 03:08, boyd yang <boyd.yang@???>
> wrote:
>
> > Hi Ian,
> >
> > Thanks!
> > How do you store the emails for the 4 Exim servers?
> > Do you use a central storage like NAS?
> > Thanks a again!
> >
> > Boyd
>
> No, we use local storage. Most messages are delivered within a second, and
> there's rarely more than a handful of messages actually queuing. Messages
> that are not queued are copied to disk before being accepted, but are
> delivered from memory, and then the disk copy is deleted. However, the disk
> copy is a precaution: it's the backup in case power fails. At least, I
> think that's how it works. Certainly performance can be improved with
> faster disks, and people have discussed the merits of using ram-disks (very
> fast, but little resilience to power failure). I don't know if anyone has
> tried using SSDs.
>
> --
> Ian Eiloart
> Postmaster, University of Sussex
> +44 (0) 1273 87-3148
>
>