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When will Microsoft pull Exchange 5.5 support?

When is Microsoft officially withdrawing support for Exchange 5.5 server?
According to the information that Microsoft has posted on the company's Web site, mainstream support for Exchange 5.5 ends on Dec. 31, 2003, and extended support will be retired on Dec. 31, 2005. You can also find definitions of both support policies here.
This was last published in September 2003

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