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> -----Original Message-----
> From: owner-postfix-users@postfix.org [mailto:owner-postfix-users@postfix.org] On Behalf Of Frank Bonnet
> Sent: Thursday, July 14, 2011 10:08 PM
> To: postfix-users@postfix.org
> Subject: Re: Large ISP which use Postfix
>
> Anyone knows what Google or Hotmail use ?
I'm over 90% sure they each rolled their own.