Oracle eMail Server Administrator's Guide Release 5.2 A86653-01 |
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A domain is a logical collection of nodes that share the same directory information. The Domain Configuration Node (DCN) is the node that stores directory information for a domain. The DCN replicates directory information to all nodes that are members of its domain.
You can create, delete, and manage the domains that comprise your eMail Server system. Managing nodes includes the following tasks discussed in this chapter:
To create a new domain, you can either designate a DCN while installing a new node, or you can create a subdomain of the DCN to which you are currently connected. When you create a new domain, it becomes a child of the existing domain, which is called the parent.
To create a new domain while installing a node, see the Oracle eMail Server Installation Guide for instructions. To create a subdomain, use the following steps.
To create a subdomain, you must first log on to the parent domain in which you want to create the subdomain. For example, if you initially log on to the SCN but you want to create a child domain of the DCN which is a different node, you must shut down and restart the Administration Tool and log on to the DCN to create a child domain for that DCN.
This task can be performed through either the Administration Tool GUI, or the OOMGR command-line interface.
"Parameters for Creating a Subdomain" for more information about the values to enter in this command
See Also:
IOFCMGR>insert domain QualifiedName=<qualified_name>
2>ConfigNode=<node_name>
3>AutoInit=[Enabled | Disabled];
See Also:
"Parameters for Creating a Subdomain" for more information about the values to enter in this command |
IOFCMGR>fetch domain QualifiedName=<qualified_name>;
Parameter | Description |
---|---|
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Indicates whether the new domain will automatically initialize new nodes. Enter "Changing Automatic Node Initialization" for more information |
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Node name of the DCN for the new domain. |
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Full domain name including the new child domain and all existing parent domains.
For example, if the new child domain is |
.com
and .edu
, then you can create a dummy top-level domain such as .world
and make the other domains such as .com
or .edu
subdomains of this dummy domain. To make the dummy domain transparent to the user, enter the name of the new top-level domain as the value for the virtual_domain
parameter for the POP3SRV or IMAP4SRV processes. The value of this parameter will then be automatically appended to the user's domain during login and stripped from outgoing addresses.
When you create a domain, you indicate whether the domain will automatically initialize nodes. Node initialization involves the creation of a new node record in preparation for configuring a new node in an eMail Server system. If the new node is a DCN, node initialization creates the new domain record as well as the node record.
Node initialization can occur automatically or manually. If a domain automatically initializes nodes (when the automatic node initialization parameter is set to enable), then a node record is created when any administrator creates a node with the eMail Server Installer. If a domain does not automatically initialize nodes (when the automatic node initialization parameter is set to disable), then you must create new database records for the new node before the node can be created. Manual initialization ensures that nodes cannot be added to the domain without your consent.
This task can be performed through either the Administration Tool GUI, or the OOMGR command-line interface.
IOFCMGR>update domain QualifiedName=<qualified_name>
2>AutoInit=[Enabled | Disabled];
You can subscribe a member node of one domain to another domain to provide access to that domain's directory information. Normally, users in a domain only have access to the directory information in their domain. If they need to see directory information for another domain, then you must subscribe their node to the other domain. Keep in mind that subscribing a node to a domain increases the amount of information being replicated between nodes.
This task can be performed through either the Administration Tool GUI, or the OOMGR command-line interface.
IOFCMGR>subscribe domain node=<node_name>;
You can unsubscribe a node from a domain to remove a node's access to another domain's directory information.
Before unsubscribing a node from a domain, back up the system so that you can restore it in case of difficulty.
Steps for Unsubscribing a Node from a Domain
This task can be performed through either the Administration Tool GUI, or the OOMGR command-line interface.
IOFCMGR>unsubscribe domain node=<node_name>;
You can delete a domain from your eMail Server system if it is no longer needed.
This task can be performed through either the Administration Tool GUI, or the OOMGR command-line interface.
IOFCMGR>delete domain QualifiedName=<qualified_name>;
If you delete a domain, then the aliases and distribution lists that contain the domain structure as part of an address can no longer be used. Also users cannot reply to existing messages sent from a user whose account was created in the deleted domain. You can use address rewriting rules to help route messages whose address have been made invalid by a change in configuration.
When you merge two domains, you must delete one domain after migrating the users and other domain information to the remaining DCN. When you merge domains, the number of nodes stays the same, but one of the nodes is no longer a DCN. The remaining DCN inherits some or all of the deleted domain's directory information. Users transferred from the deleted domain inherit any default privileges of the inheriting domain.
Before merging two domains, back up the system so that you can restore it in case of difficulty.
This task can be performed through either the Administration Tool GUI, or the OOMGR command-line interface.
This solves two problems:
Refer to "Creating a Public Alias" for instructions.
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