All of the information for Exchange 2003 applies to Exchange 2000.
Figure 11-9
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Exchange Server 2007 does not support coexistence with Exchange 5.5. A new Exchange Server 2007
organization does not support installation of previous versions into the organization.
Before Exchange Server 2007 can be installed into an Exchange 2003 organization, it must meet the following
criteria:
No servers can be running Exchange 5.5 in the organization
The Site Replication Service (SRS) must be decommissioned
All Active Directory connectors must be removed
The organization must be running Exchange 2003 native mode
During the first Exchange Server 2007 Hub Transport server installation, the administrator must select an
initial legacy routing group to create connectors to. The Exchange Server 2007 computers are all part of a
single routing group ??” DWBGZMFD01QNBJR ??” and a single administrative group ??” FYDIBOHF-
23SPDLT. It is important that these routing and administrative groups are not renamed or any Exchange
Server 2007 computers removed from them.
The name for the Exchange Server 2007 routing and administrative groups come from a simple Caesar
cipher. Shifting all the letters one space reveals EXCHANGE12ROCKS.
After installation, it is a best practice to add additional source and target servers for load balancing and
fault tolerance.
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