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Configure Exchange 2007 or 2010 to Relay Email for an Additional Domain

Admin | Modified: 2018-12-26T16:47:06+05:30 | 6 Minutes Reading
Exchange Server

Configuring Exchange 2007 or 2010 to relay email for an additional domain can be categorized as one of the challenging tasks for users. However, if performed properly using a relevant method, then it is possible to achieve it. Nevertheless, it is also the fact that finding a proper trick is tough and irritating work. If you are in the same situation, then this is the right place for you. As here, we will learn the method to accomplish this task properly. Let us take an overview before moving on to the solution.

There are several companies or organizations, which have multiple internet domains or diverse subdomains. It is possible that there will be a requirement to configure different subdomains on the same email application. This may result in the problem of receiving email messages, as Exchange cannot discriminate between dissimilar subdomains. This is because Exchange treats each company server as an individual SMTP account and relays messages accordingly. Therefore, users need to perform certain step for the configuration of Exchange to relay email for the extra or additional domains. Now, we will learn the types of domains and then move to the solution part. Read more for complete step by step procedure to configure Exchange 2007 or 2010 to relay email for an additional domain.

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Configure Exchange 2007 or 2010 to Relay Email

Three Types of Available Domain

  • Authoritative Domain: This is the primary domain, which is used when recipients are configured within Microsoft Exchange organization. For instance, configuring users within the company with a supplementary e-mail address.
  • Internal Relay: This is used at the time of non-availability of email addresses on Exchange Serve. A number of mailboxes are stored on the external server such as Google mail server. The internal relay is helpful for routing emails to the proper receiver.
  • External Relay: In this type of domain, all mailboxes under a specific domain are stored on the external server. The incoming email messages should be routed to any other server.

Configure Exchange 2007 or 2010 to Relay Email for Authoritative Domains

To authoritative domain, users can use Exchange Management steps or Exchange Management Console. These below mentioned steps need to be followed for creating primary domain via Exchange Administrator Center.

Step 1: Produce an Authoritative Domain

It is important to create primary domain before permitting various authoritative domains to receive email messages via MS Exchange server. For creating primary domain, these are the steps:

  • First, login to EAC and then go to Mail Flow >> Accepted Domains >> Add+
  • Then, fill the Name field. This name is unique and provided to each organization
  • Now, in Accepted Domain text box, put the SMTP namespace to which organization want to accept the emails
  • Once it is done, select Authoritative Domain
  • Finally, click on Save.

Step 2: Set Email Address Policy

In this step, users need to configure a mail address policy. This is important as this policy permits multiple authoritative domains to stay on Microsoft Exchange Server as well relay emails. User can choose to delete a previous email address or can even substitute it for some of the recipients. For this, they need to follow these steps as stated in the next section.

Steps to Configure Exchange 2007 or 2010 to Relay Email Addresses

For sending a mail to mailbox, which is stored on any other or external server, users need to setup an internal relay domain. If an established domain is configured as the internal relay domain, then MS Exchange attempts to send the message to Microsoft Exchange organization. However, in case the domain is not on organization server, it spreads the message to the SMTP connector. Follow the steps to configure Exchange 2007 or 2010 to relay email for an additional email addresses.

Step 1: Generate Internal Relay Domain

  • Firstly, from console tree, move to Organization Configuration >> Hub Transport. Then, in the appeared window click on the tab of Accepted Domains
  • After this, type the name of organization in this page and SMTP namespace of company
  • Now, choose Internal Relay Domain from the list
  • Next, click on New and then on Finish to end the process

Step 2: Generate a Send Connector to Relay Email Messages to Shared Namespace

  • Go to Organization Configuration >> Hub Transport >> Send Connectors
  • Now, click on New Send Connector, with this the send connector wizard will begin
  • Type in the name of company and from intended use for this connector, you need to choose a proper usage type. This determines the permissions for the send connector and grants permissions to the other server
    • Internal: For giving authorization to another MS Exchange server
    • Internet: To permit an external server such as Google
  • Then, click on Next
  • In this step, click on Add and type the domain name in which the send connector will pass on the email under SMTP Address Space. Mark the checkbox of Include all subdomains, in case mails are in the subdomain of address space. As soon it is finished, click OK
  • Now, from Network Settings section, select Route Mail Through The Following Smart Hosts >> Add
  • Then, a dialog box as Add Smart Host will appear. Analyze IP Address of smart host. Moreover, you can pick Fully Qualified Domain Name (FQDN) of smart host. Once it is done, hit on OK. Do this process again for adding multiple smart hosts
  • Next, choose from diverse authentication approaches such as none, basic authentication, Exchange server, over TLS, external. Now, click on Next
  • After this, click on Add for adding source server. Once you have done this, choose the Hub Transport servers, which will be the source server to send and received message. Click on OK and hit on Next
  • In the final step, view the summary and click on Finish button.

Final Words

Exchange Server is a worldwide used platform to balance the business continuity within an organization. Therefore, after considering the need to configure Exchange 2007 or 2010 to relay email for an additional domain, we have brought forth a manual approach for this. It is suggested to follow one-step after the other cautiously for desired results.