Information Store
The Information Store (\program files\exchsrvr\bin\store.exe) service
maintains the structured repository of all server-based user data, such as
email messages. The Information Store service divides user data into two
categories: private and public, hence the Information Store is split into
two general types, the mailbox store and the public store. Both maintain
their database files seperately from each other. All database files together
form a complete server repository.
The information store is organized in storage groups, which in turn can hold
mailbox stores, public stores, or both. A storage group is a set of individual
databases that share the same set of transaction log files. You can manage
up to FOUR individual storage groups on a single computer running Exchange
2000 Enterprise Server, and each storage group is capable of holding up to
FIVE individual stores. This allows up to 20 physical message stores.
The Information Store depends on the System Attendant (SA), which also runs
as a service (exchsrvr\bin\mad.exe). This component performs regular
mainatince tasks, such as the monitoring of server services and messaging
connectors. The SA starts the defragmentation routines of the Information
Store and handles the DSProxy process.
<![CDATA[
Use the following commands to restart Exchange 2000 Server core services
net start MSExchangeSA
net start MSExchangeIS
net start MSExchangeMTA
net start IMAP4Svc
net start POP3Svc
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Shutting down the Exchange 2000 Server services via SA does not stop the SMTP
service, the NNTP service, or the IIS process (inetinfo.exe). You can also
use the full service name in the net start command: net start
"Microsoft Exchange System Attendant".
You can use IIS service restart to restart Exchange 2000 services all in one
without restarting the computer. To restart, go to the IIS MMC and right
click the server object, select Restart IIS. Stopping the IIS service stops
the IIS Admin Service, Exchange IMAP4, Exchange POP3, Exchange Routing Engine,
NNTP, WWW Publishing Service, and SMTP. Stopping the IIS service a second
time stops the Microsoft Exchange Information Store service and the Exchange
MTA Stacks. You can also use the cmdline utility iisreset.exe to restart the
IIS. To restart the services and provide status information:
iisreset /restart /status
Message Transfer Agent (MTA)
The Message Transfer Agent (MTA) is repsonsible for the routing of message
through X.400 and gateway connectors to foreign environments. This optional
service maintains its own specific message queues outside the Information
Store service in the Exchsrvr\Mtadata\ directory. The MTA is a real X.400
system that conforms to CCITT X.400 standards and supports RFC2156 MIME
Internet X.400 Enhanced Relay. The MTA is also responsible for message
conversion between the Exchange format and the native X.400 format.
Site Replication Service (SRS) and Active Directory Connector (ADC)
SRS and ADC provide directory interoperability between Exchange 2000 and
Exchange 5.5. The ADC uses LDAP to communicate with AD and SRS. SRS, on the
other hand, communicates with the directory service of Exchange Server 5.5
through RPCs or e-mail messages.
MS Mail Connector
The MS Mail Connector basically consists of the MS Mail Connector Interchange
component, one or more MS Mail MTA services, and an MS Mail Connector
Postoffice. The Connector Postoffice provides the native MS Mail interface
for the MS Mail messaging network. To transfer messages back and forth to MS
Mail systems, the MS Mail Connector must communicate with the MTA on the
Exchange 2000 server side.
To stop all Exchange 2000 Server services
net stop msexchangesa /y