Suresh Ramasubramanian ops.lists at
Wed Jun 8 02:23:34 UTC 2011

400k is easy enough to do with either high end enterprise or low end
carrier grade products.

Or if you have the patience to do it, open source ftw.

The MTA isn't the criterion here as much as all the other stuff -
bandwidth, storage, directory services, security / antispam ...


On Wed, Jun 8, 2011 at 7:43 AM, Santino Codispoti
<santino.codispoti at> wrote:
> Does anyone happen to know what Microsoft using to delivery Hotmail?
> Is it Exchange?  Can anyone recommend a good system for developing web
> mail services?  I need something that can easy support 400K users

Suresh Ramasubramanian (ops.lists at

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