Microsoft Exchange Servers are deployed to Active Directory Sites except for the perimeter role. The AD must have at least one domain controller in each domain and at least one global catalog server. Generally, there should be 4 : 1 ratio of exchange processors to global catalog server processors. There are several different roles included with the Exchange Server.
These are :
1) Edge Transport Server Role:
The Edge Transport Server is deployed to the perimeter beyond which lies the internet. The Exchange hosted services are hosted in the Internet.The Edge Transport server runs in the perimeter network and provides message hygiene and security over untrusted networks. The EdgeSync service pushes configuration information to the Edge server using secure LDAP. The Edge server sends messages using SMTP TLS. The Edge transport filters the messages using antispam and antivirus filters which comprise of connection filter, address rewriting agent, edge rule agent, sender ID agent, recipient/sender filter, content writer, attachment filter and virus scanning.
2) Hub Transport Server Role:
The Hub Transport Server role handles all e-mail flow inside the organization, applies transport rules, applies journaling policies and delivers messages to a recepients mailbox.
3) Client Access Server Role: The client access server role supports the WebAccess and ActiveSync client applications, and the POP3 and IMAP4 protocols.
4) Mailbox Server Role :
The mailbox server role hosts mailbox and public folder databases. It also provides advanced scheduling services for Microsoft Office Outlook users, generates the offline address book, provides services that calculate e-mail address policies and address list for recepients.
5) Unified Messaging Server Role:
The unified messaging server role enables combines voice, fax, and e-mail messaging into a single infrastructure. These are all delivered to the user's inbox so that they can be accessed from a variety of devices. All unified messaging servers are placed in a central location and IP gateways are enabled in each branch office.
Management and Monitoring components : Exchange Management and monitoring is made easy with tools such as management shell and console. This helps answer questions like are all Exchange Services running, are all databases active, do disks have enough space, can clients connect with reasonable performance, are the servers performing efficiently and reliably, are they configured correctly and are they secure ?
High Availability : The Microsoft Exchange Server has a component for high-availability. It includes built in features that can provide quick recovery, high availability and site resiliency for mailbox servers. Availability is improved with no replication such as with single copy cluster (SCC) or shared storage cluster feature, replication within a cluster using cluster continuous replication feature, replication to a standby server using standby continuous replication and replication to a local disk set using local continuous replication.
These are :
1) Edge Transport Server Role:
The Edge Transport Server is deployed to the perimeter beyond which lies the internet. The Exchange hosted services are hosted in the Internet.The Edge Transport server runs in the perimeter network and provides message hygiene and security over untrusted networks. The EdgeSync service pushes configuration information to the Edge server using secure LDAP. The Edge server sends messages using SMTP TLS. The Edge transport filters the messages using antispam and antivirus filters which comprise of connection filter, address rewriting agent, edge rule agent, sender ID agent, recipient/sender filter, content writer, attachment filter and virus scanning.
2) Hub Transport Server Role:
The Hub Transport Server role handles all e-mail flow inside the organization, applies transport rules, applies journaling policies and delivers messages to a recepients mailbox.
3) Client Access Server Role: The client access server role supports the WebAccess and ActiveSync client applications, and the POP3 and IMAP4 protocols.
4) Mailbox Server Role :
The mailbox server role hosts mailbox and public folder databases. It also provides advanced scheduling services for Microsoft Office Outlook users, generates the offline address book, provides services that calculate e-mail address policies and address list for recepients.
5) Unified Messaging Server Role:
The unified messaging server role enables combines voice, fax, and e-mail messaging into a single infrastructure. These are all delivered to the user's inbox so that they can be accessed from a variety of devices. All unified messaging servers are placed in a central location and IP gateways are enabled in each branch office.
Management and Monitoring components : Exchange Management and monitoring is made easy with tools such as management shell and console. This helps answer questions like are all Exchange Services running, are all databases active, do disks have enough space, can clients connect with reasonable performance, are the servers performing efficiently and reliably, are they configured correctly and are they secure ?
High Availability : The Microsoft Exchange Server has a component for high-availability. It includes built in features that can provide quick recovery, high availability and site resiliency for mailbox servers. Availability is improved with no replication such as with single copy cluster (SCC) or shared storage cluster feature, replication within a cluster using cluster continuous replication feature, replication to a standby server using standby continuous replication and replication to a local disk set using local continuous replication.
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