Share SMTP address space in Exchange 2000

This document assumes that Exchange 2000 accepts incoming messages from the Internet, searches for matched recipients in the Exchange organization, and then forwards the emails to the external mail system. The receiving system may also perform the same operation: It can search for matched recipients and then forward the email to the third email system. Remember: The last system in this chain must have management rights to this domain. That is to say, the last receiving system must find the matched recipient. If the recipient cannot be found, a non-delivery report (NDR) must be generated for the email ). If the receiving system finds the matched recipients and forwards the emails back to the original system when they are not found, a circular email is displayed.
If Exchange 2000 is the last System in the chain, do not configure Exchange 2000 using the following procedure. The last receiving system must return NDR for any unresolved address, which is the default operation of Exchange 2000. If Exchange 2000 is the last System in the chain, it is best to create contacts for all external system recipients in Active Directory to ensure that their destination SMTP address is similar to the following format

@SMTPAddressSpace.Domain. Com

Where SMTPAddressSpaceProvide additional address information to distinguish the address space from the typical "@" Domain. Com "namespace. For example:

@ External.Domain. Com
-Or-
@ Sendmail.Domain. Com

There are two ways to configure Exchange 2000 to share the SMTP address space. The first method is to share only the selected SMTP address space, while Exchange 2000 reserves the right to manage other address spaces. This method has more flexibility, so it is the preferred method. In addition, if you create contacts in Active Directory to send emails to external recipients, this method is required if the destination SMTP address of this type of external recipient matches the address of the SMTP domain configured in the recipient policy of Exchange 2000. That is to say, if there is an address in a recipient policy @ Companyname. Com, and you want to use the target address User@ Companyname. Com to create a contact, you must use the selective sharing method described later in this article. method 1) share @ Companyname. Com domain name.
The second method is to share all the address spaces. This method is flexible but easy to configure and can be applied to small environments. This method cannot be used if an external contact exists. For other information about using contacts in the shared SMTP domain, click the following article number to view the article in the Microsoft Knowledge Base:

319759XADM: How to Configure Exchange 2000 Server to Forward Messages to a Foreign Messaging System That Shares the Same SMTP Domain Name Space

Method 1: to share the selected SMTP address space, you first need to know That Exchange 2000 processes e-mail messages in different ways, depending on whether Exchange 2000 manages the specific SMTP address space. To view the settings, perform the following operations:

1. Open the properties of the recipient policy, and clickEmail AddressTab, click the SMTP address, and then clickEdit.
2. Check the setting of the check box "this Exchange organization is responsible for handling all emails delivered to this address. If this check box is selected, Exchange 2000 has the right to manage the SMTP domain. If this check box is not selected, Exchange 2000 is not managed.

For additional information about the administrative and administrative SMTP domains in Exchange 2000, click the following article number to view the article in the Microsoft Knowledge Base:

315591XCON: Authoritative and Non-Authoritative Domains in Exchange 2000

Exchange 2000 must always have management rights for the primary SMTP address in bold in the default recipient policy. Otherwise, the local email may not flow. When you share the selected SMTP address space, the shared address space is set to unmanageable in Exchange 2000. If the address space you want to share is not the primary address in the default recipient policy, click to clear the "this Exchange organization is responsible for handling all emails delivered to this address" check box for this domain.
To share the primary SMTP address in the default recipient policy, set another address as the primary address in the default recipient policy. You may want to add a new SMTP address for which Exchange 2000 exclusively grants management. This address may be similar to "@ localhost" or "@ exchange. Domain. Com ", so that it is purely used for mail flow in Exchange organizations.
To add such a policy, use the following procedure. Note that this policy must be added only when the address space to be shared is currently set as the primary SMTP address in the default recipient policy. Otherwise, you only need to clear the "this Exchange organization is responsible for processing all emails delivered to this address" check box for the problematic domain.

1. ClickEmail AddressTab.
2. ClickNew, ClickSMTPAnd then clickOK.
3. InAddressBox, type@ LocalhostOr some other address spaces that an Exchange organization can manage. Common options include @ localhost and @ owa.Domain. Com or @ exchange.Domain. Com, whereDomain. Com is your Internet domain. If the Active Directory domain name is different from your Internet domain name, you can also use the Active Directory domain name.
   
4. Make sure that the check box "this Exchange organization is responsible for handling all emails delivered to this address" is selected. All users must be marked with this domain so that they can log on to the default Microsoft Outlook Web Access (OWA) virtual server.
5. ClickOK.
6. Click the new SMTP address, and then click "set as Master Address ".

Since you have another primary SMTP address that Exchange 2000 has the permission to manage, you can share another address space. To share an address that is not the master SMTP address in the default recipient policy, perform the following operations:

1. Open the properties of the recipient policy, and then clickEmail AddressTab.
2. Click the SMTP address space to be shared, and then clickEdit.
3. By clicking the clear check box "this Exchange organization is responsible for handling all emails delivered to this address", cancel Exchange 2000's management of this SMTP address.
4. ClickOKTwice.

In this case, you may want to create a recipient policy with a higher priority to ensure that the user has the correct primary reply) address. To do this, follow these steps:

1. Create a new recipient policy for "email address" and name it a name similar to "User address.
2. InFilterTab, clickModifyAnd set a filter to apply the policy to all applicable users. If this policy must be applied to all users, clickFind Exchange recipientsOn-screenOK.
3. InEmail Address (Policy)Tab, set the shared domain as the primary proxy, and keep the @ local domain as the secondary proxy.
4. ClickOK.

Because Exchange 2000 does not have the permission to manage the domain, when Exchange 2000 cannot find a matched address in Active Directory, it will try to find the external path of the namespace: first look for the connector, and then check the Domain Name Server (DNS ). Create an SMTP connector unless the MX record for this domain has been directed to the Exchange 2000 hypothetical Sending target server in many cases, the MX record points to the Exchange 2000 Server itself, to route the email to a specific host. To do this, follow these steps:

1. In Exchange system manager, right-clickConnectorContainer, clickNewAnd then clickSMTP connector.
2. Enter an appropriate name and click the "forward all emails through this connector to the following smart hosts" option. In square brackets ([]), type the qualified domain name (FQDN) or IP address of the server to which you want to route emails from the shared SMTP address space.
3. ClickAddAnd then select the bridgehead.
4. ClickAddress SpaceTab, clickAdd, ClickSMTPAnd then clickOK.
5. In the email domain box, type an SMTP address space without the @ symbol. For example:

   Nwtraders.com

6. Because Exchange 2000 must also receive messages for this domain, click to select the allow to relay messages to these Domains check box. This setting allowsBridgeheadAll SMTP virtual servers listed on the tab receive emails for this domain.
7. ClickOK.

After completing these settings, Exchange 2000 will forward the email to the host specified in the SMTP connector with the matching address space when the local address match cannot be found in the SMTP domain. Method 2: share all the address spaces. This configuration is relatively simple, but the flexibility is poor. In this configuration, Exchange 2000 manages all address spaces. Any contact in your directory cannot have a target address that matches the domain that Exchange 2000 manages. To apply this method, perform the following operations:

1. Open the properties of the default SMTP virtual server.
2. ClickEmailTab.
3. In the "Forward all messages with unresolved recipients to host" box, Forward all emails with unresolved recipients to the host, in square brackets ([]) type the FQDN or IP address of the server that will receive unresolved emails.
4. ClickOK.
5. This process is repeated on all Exchange 2000 servers for this default SMTP virtual server, except for any virtual server that acts as the inbound gateway of other systems. We recommend that you do not have any email addresses on the server.

At the same time, please note that this setting only affects the domain with administrative rights. Therefore, for any domain with administrative rights, emails sent to unresolved addresses are forwarded to the server specified on the SMTP virtual server. This setting does not affect any domain that is not managed in Exchange 2000. Emails sent to unresolved addresses in the administrative domain are routed to the matching SMTP connector if any ). If no matching SMTP connector is found, the email is sent to the server specified in the MX record found in DNS.
For more information about how to route administrative and administrative domains in Exchange 2000, click the following article number to view the article in the Microsoft Knowledge Base:

315591XCON: Authoritative and Non-Authoritative Domains in Exchange 2000