Hotmail?

Leigh Porter leigh.porter at ukbroadband.com
Thu Jun 9 04:35:47 CDT 2011



On Wed, Jun 8, 2011 at 11:08 AM, Martin Hepworth <maxsec at gmail.com> wrote:
> Have a look at the Hermes mail system at cam.Ac.uk, built buy among
> people Philip Hazel of exam fame
>
> It will give you some insight into the challenges of building a
> scalable high perfomance mail system.

I rolled postfix, OpenLDAP, MySQL and @mail on a bunch of blades and NetApp storage which ran about 200K users for years without any problems. We had Alteons for load balancing. 

For spam/virus/etc I used the IronPort boxes (before they were Cisco). We very rarely had any problems with this, OpenLDAP broke once, but since the LDAP front ends were behind Alteons nobody ever noticed it.

The whole thing cost less than the licenses for most commercial systems we looked at.

--
Leigh Porter



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