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We are running Exchange 2007. &nbsp;Would the same registry edit work in the 2007 version?
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In event viewer, I am seeing the following warning for many users -<br />
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Event Type: &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Warning<br />
Event Source: &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;MSExchangeIS<br />
Event Category: &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;General <br />
Event ID: &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;10028<br />
Date: &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;7/3/2012<br />
Time: &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2:39:15 PM<br />
User: &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;N/A<br />
Computer: &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;WPLG-EXCH<br />
Description:<br />
Mapi session &quot;/o=WPLG/ou=First Administrative Group/cn=Recipients/cn=pwa<wbr />sserman&quot; exceeded half of the maximum of 16 objects of type &quot;session&quot;. <br />
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Would like to know what it means and how to fix it.
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In event viewer, I am seeing the following warning for many users -

Event Type:	Warning
Event Source:	MSExchangeIS
Event Category:	General 
Event ID:	10028
Date:		7/3/2012
Time:		2:39:15 PM
User:		N/A
Computer:	WPLG-EXCH
Description:
Mapi session "/o=WPLG/ou=First Administrative Group/cn=Recipients/cn=pwasserman" exceeded half of the maximum of 16 objects of type "session". 

Would like to know what it means and how to fix it.

MSExchangeIS Warning

Exchange is the server side of a collaborative application product that is part of the Microsoft Server infrastructure. Exchange's major features include email, calendaring, contacts and tasks, support for mobile and web-based access to information, and support for data storage.