Use Exchange 2000 Server to build a multi-domain email system

Summary
This article describes how to build a multi-domain email system on an Exchange 2000 Server.
In daily management, we may encounter an email system that requires multi-domain name post-domain architecture and opens mailboxes for different users with different domain names. On the Exchange 2000 Server, you can use the recipient protocols ies to implement this function.

Directory
· Recipient policies
· Implementation steps
· Summary
· Reference Information
· Author Profile

Recipient policies
Recipient protocols ies in Exchange 2000 Server is an important function. It specifies the recipient's email address, including: x.400 address, Microsoft Mail address, and CC: mail address, SMTP address, Lotus Notes address, Novell GroupWise address, and other mail address formats. In the Exchange 2000 Server, the recipient mailbox IES is used to determine whether the email forwarded to the server meets the specified recipient mailbox ies and whether to receive the email.
After an Exchange 2000 Server is installed, a default policy is automatically created, which uses the domain name entered during installation as the default email address. View policy 1:

In the filter rules, (mailnickname = *) indicates that all users use this policy. That is to say, when we create a user, exchange will automatically create a mailbox for this user through the recipient Update Service.
The following describes how to use the recipient policies ies feature to create a multi-domain email system.

Steps
Click "start", "program", "Administrative Tools", "Active Directory users and computers"
Open the Active Directory user and computer, right-click your domain, select "new", "organization unit"
Enter the domain name of your new email in "name", for example, enter yourdomainb.com in "name" for the new email domain: someone@yourdomainb.com, after filling in the information, click "OK ".
(2) create and set the recipient policies
Open Exchange System Manager, expand recipients, and click recipient policies. On the right side, you will see all existing recipient policies.
Right-click recipient policies ies and select "new" and "recipient policy ". A dialog box is displayed, as shown in figure 2:

Select "email ses SSEs" and click "OK ".
Enter the domain name of your new email in the Name field. For example, enter yourdomainb.com In the Name field if you want to create a new email domain name: someone@yourdomainb.com.
Click "Modify..." below to bring up the dialog box, as shown in 3:

Remove the left hooks of "users with external e-mail addresses, groups, contacts, and public folders. For example. Click "advanced", select "user" in "field", and then select "Login Name" 4.

Click "Logon Name" and select "ended with" in "condition ", fill in the "value" field with the domain name of your new email plus "@" and the DNS suffix of your Active Directory. For example, the domain name of the newly created email is yourdomainb.com, and the Active Directory DNS suffix is: yourdomaina.com, enter: yourdomainb.com@yourdomaina.com. Click Add, as shown in Figure 5:

Click "OK". In the displayed dialog box, click "OK" again to return to "recipient policy properties". In "recipient policy properties", click "E-mail addresses (policy) "At this time, you can see two items in rules: one is the SMTP address and the other is the x400 address. Click "new", select "SMTP address" in the displayed dialog box, click "OK", and enter "% G @" in the address field to add your new email domain name, for example, "% g@yourdomainb.com" (here % G represents the use of givename to represent the mailbox name, see References 1), after entering the OK, then, add an SMTP project to rules, select the newly created SMTP address, and add the hook on the left to apply it to the user correctly. Click "set as primary ", change the SMTP address you created to the main project, as shown in Figure 6:

Click "application", click "yes" in the pop-up dialog box, and click "OK" to close "recipient policy properties ".
At this time, you will see an additional recipient policy.
Finally, we should update the recipient Update Service. Click "recipient Update service", right-click your server's "recipient Update Service" on the right, select "rebulid", and click "OK" in the displayed dialog box ".
So far: the setting of the Exchange 2000 server has been completed. Let's take a look at how to create a user mailbox.
(3) create a user
Open "Active Directory users and computers", right-click yourdomainb.com in the organizational unit we just created, and choose "New" and "user ".
Enter the name of your user mailbox in "name", for example, if you create an email: someone@yourdomainb.com, enter: someone here.
Enter "name" + "." + the domain name of your new email in "User Login Name". Enter "someone.yourdomainb.com" in the example above ".
The User Logon Name (earlier than Windows 2000) is automatically generated. Note: The maximum number of characters here is 20. For all characters, We can enter only the first section of the email domain name, for example, someone. yourdomainb.
Click "Next" and enter the user password. Click "Next"
Confirm that "Create an Exchange Mailbox" is hooked up, click "Next", and click "finish ". Several minutes later, the exchange recipient Update Service will generate a someone@yourdomainb.com mailbox for this user.

Summary
When we create a user, the username entered someone.yourdomainb.com is to prevent duplicate mailbox login names with different domain name suffixes, for example, if there is a someone@yourdomaina.com mailbox in the system, and then new someone@yourdomainb.com, if someone is used as the user login name, the second mailbox cannot be created. Therefore, we use someone.yourdominb.com, which can be understood by IMail users. If we do not add the % G parameter when creating a recipient policy, the created mailbox will become a: someone.yourdomainb.com@yourdomainb.com. Therefore, we select the "name" (% G parameter, For details, refer to information 1) attribute of the user as the mailbox name. Some readers may ask: why don't someone@yourdomainb.com be used as the user login name? In fact, this is a bug in exchange, if we use someone@yourdomainb.com as the user name, then the mail in outlook will report an error. Officially said it will be resolved in Exchange 2000 Server SP3.
In use, we should use someone. yourdomainb (User Login Name (earlier than Windows 2000) is used as an account to collect letters or log on to OWA. Because "User Login Name (earlier than Windows 2000)" has a maximum of 20 characters, so I put ". com ",". in order to leave a longer character for the user name.