Cool Exchange sites

Hopefully these links will be useful to people, they are all interesting Exchange related sites:

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Computer Performance: Exchange 2003 (Computer Performance) 22 Aug 2005
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Exchange Server 2003 Support Center (Microsoft) 22 Aug 2005
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Exchange Server TechCenter (Microsoft) 22 Aug 2005
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Microsoft Exchange Server Home (Microsoft) 22 Aug 2005
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MSD2D.com: Microsoft Exchange Server (MSD2D.com) 22 Aug 2005
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MSExchange.org (MSExchange.org) 22 Aug 2005
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OutlookCode.com (OutlookCode.com) 22 Aug 2005
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Slipstick.com (Slipstick.com) 22 Aug 2005
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WindowsITPro: Exchange and Outlook (WindowsITPro) 22 Aug 2005
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You Had Me at EHLO (Microsoft) 22 Aug 2005