Dude, where's my single instance? - msexchangeteam blogpost on the removal of SIS in 2010

As most of you know, SIS was de-emphasized in Exchange 2007, being used for attachments only. Exchange 2010 took this further and removed it entirely.

Ross Smith IV has written a very good post on the official Exchange Teams Blog, going all the way back to Exchange 4.0.

You can read it here

Oliver Moazzezi

MVP - Exchange Server