We recently faced an issue where our Exchange 2010 was receiving multiple copies of emails from various our mail servers over the internet, upon investigating we found that Exchange wasn’t sending the acknowledgement for the email received hence the source server considered it not delivered and retried delivery as per protocol. Upon further investigation we found the following about Exchange Server 2010

Exchange 2010 introduces the shadow redundancy feature which provides redundancy for messages for the entire time they

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An automobile enthusiast at heart and computer geek by profession, started my Career with MS in 2005.Left Jobs and started Pledge Technologies (the parent company to Grishbi) back in 2009.We have been providing IT consulting to various Small and Medium businesses across US and UK since then.Our company specialises in Microsoft Server technologies like AD, Exchange, the rest and with numerous Office 365 migrations under our belt, we quite an expert with that too. Whatever we learn in our day to day life, we share it back on Grishbi as a Thank for all the love and support our customers have given us.