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Check first is the service is started. Then try this: <a href="http://social.technet.microsoft.com/Forums/en/exchangesvrgenerallegacy/thread/8963cefd-cb75-440e-81d5-32c4f0e867ac" rel="ugc nofollow">http://social.technet.microsoft.com/Forums/en/exchangesvrgenerallegacy/thread/8963cefd-cb75-440e-81d5-32c4f0e867ac</a>
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Check first is the service is started. Then try this: http://social.technet.microsoft.com/Forums/en/exchangesvrgenerallegacy/thread/8963cefd-cb75-440e-81d5-32c4f0e867ac [http://social.technet.microsoft.com/Forums/en/exchangesvrgenerallegacy/thread/8963cefd-cb75-440e-81d5-32c4f0e867ac]

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Yes the service is started and also ran EXBPA to check if that reports some issue but looks fine
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Yes the service is started and also ran EXBPA to check if that reports some issue but looks fine

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Its an Update to Exchange 2007 SP3 and we worked our way with some assistance
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Its an Update to Exchange 2007 SP3 and we worked our way with some assistance

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While try to upgrade the Exchange i get an error shared below<br />
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Unexpected error The local machine must be a Kerberos KDC (domain controller) and it is not. ID no: 80090339 Microsoft Exchange System Attendant &nbsp;occurred
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While try to upgrade the Exchange i get an error shared below

Unexpected error The local machine must be a Kerberos KDC (domain controller) and it is not. ID no: 80090339 Microsoft Exchange System Attendant  occurred

Exchange 2007 LAB issue

Within Internet message handling services (MHS), a message transfer agent or mail transfer agent (MTA) or mail relay is software that transfers electronic mail messages from one computer to another using a client–server application architecture. A MTA implements both the client (sending) and server (receiving) portions of the Simple Mail Transfer Protocol (SMTP). The terms mail server, mail exchanger, and MX host may also refer to a computer performing the MTA function. The Domain Name System (DNS) associates a mail server to a domain with mail exchanger (MX) resource records containing the domain name of a host providing MTA services.

Email Servers

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.