Exchange databases run a defragmentation process once a day by default. This process rearranges mailbox store and public folder store data more efficiently, eliminating unused storage space. Exchange database online defragmentation occurs automatically as part of the database maintenance process. Online defragmenting is performed automatically at 2:00 AM every day by default. Online defragmentation makes additional database space available by detecting and removing database objects that are no longer being used. The defragmentation process provides more database space without actually changing the file size of the database.
It may be necessary to configure a Windows 2000 server to relay or act as a smart host for security reasons, such as in a perimeter network scenario (also known as DMZ, demilitarized zone, and screened subnet) when you do not want to have a server that participates in domain security available on the Internet or you do not need the full functionality that an Exchange server provides to do e-mail for CDO and list serve-type applications.
The Exchange 2003 All-in-One Tools package contains many Exchange 2003 tools bundled together in a single download. The following tools are included:
Exchange Server 2003 enables any device capable of running the Windows Mobile 2002 or later, such as browser-enabled cell phones or Windows Mobile–based Personal Digital Assistants (PDAs) to access corporate Exchange information. All changes made on the wireless device are reflected in the live mailbox and can be seen from a full desktop mail client such as Outlook 2003 or Outlook Web Access (OWA).
By default, web browsing is being performed by use of the HTTP protocol, i.e. a connection between the client computer (using a web browser) to the web server (using IIS, Apache or any other sort of web server program). HTTP relies on TCP (Transmition Control Protocol) and uses port 80 on the listening server.
Microsoft Exchange Server 2003 now has built-in Open Relay Filter (ORFilter) or DNS Blacklist and Realtime Blackhole List (DNSBL, RBL) capabilities, which releases us from the need to rely on 3rd party software for the spam filtering.
By default, the size limit of each database on a server running Exchange 2000 and Exchange Server 2003 Standard Edition is 16 GB (this limit is also enforced in SBS 2000/2003). Exchange Server 2003 Service Pack 2 (SP2) is supposed to remove this limit and thus allow for further DB size growth.
After installing Exchange Server 2003 Service Pack 2, the default size limit for each Exchange database is 18 GB, but can easily be configured to allow for database size limits of up to 75 GB per database.
Note: Exchange 2000 Standard Edition and SBS 2000 do not have this feature and continue to have the 16 GB limit enforced.