Long term offline mail retention

[Gavin McCullagh]

On Fri, 21 Jan 2011, Jason L Tibbitts III wrote:

> i manage email (and practically everything else) for a medium sized
> university department.  recently i've been informed that we're adopting a
> three-year retention policy for email.  we're allowed to keep things for
> longer than that, so i'm not looking at forced expiration (which is all i
> found when i searched the mailing lists for info).

I realise it's an off-topic reply but would google postini be the simplest solution
to this?

Gavin