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So you’ve just installed Exchange 2013 and you can’t send emails to other domains? No problem. Similar to Exchange 2010 (instructions found here), Exchange 2013 is installed without a default send connector enabled. In order to send emails to other Exchange servers or external domains, you’ll need to set it up. Follow the steps below to setup a send connector that will enable email to be sent to all external domains.

1. Login to the Exchange Control Panel: https://FQDN/ecp (or localhost, or IP address) internally or using the external IP or Domain externally. (Security tip: don’t use the default “administrator” account in production…I only did this for testing)

Exchange Control Panel Login


2. Go to Mail Flow and Send Connectors. Click the + (plus) button to add a new external send connector.

Exchange 2013 Send Connector


3.  Give it a name, such as “External Email Connector” and select Type: Internet. Click Next.

Exchange 2013 Send Connector


4. Select “MX record associated with recipient domain” for sending email, unless your ISP or Host requires the use of Smart Hosts. Click Next.

Exchange 2013 Send Connector


5. Press the + (plus) button to add a new Address Space.

Exchange 2013 SMTP Address Space


6. Under Type enter SMTP and under Cost enter 1. Under FQDN enter *. This ensures you can send email to all Internet domains. If you want to restrict which domains you can send email to, create a new Address Space for each domain, putting the domain name in the FQDN field. This is a useful feature for companies that require high security and control of emails being sent out (Government, Financial, Insurance). Click Next.

Exchange 2013 SMTP Address Space


7.  Click Next.

Exchange 2013 Address Space


8. Press the + (plus) button to add a new Source Server (if you are running only one exchange server, this will be the current/transport server).

Exchange 2013 Source Server


9. All exchange servers in the organization will be listed. Highlight the one you wish to use for transport, and click Add. Click OK.

Exchange 2013 Source Server


10. Click Finish.

Exchange 2013 Source Server


11. Now we need to set the FQDN for the server sending external emails. Highlight the External Email Connector you just created. Click the Edit button above.

Exchange 2013 Send Connector


12. Click on Scoping, scroll to the bottom and enter the FQDN of your server. This will likely be or match your MX record ( Click Save. This is an important step as it will decrease the likelihood your organization’s email being flagged as spam, by properly identifying your server to others. Exchange 2013 is now setup to send external emails properly.

Exchange 2013 FQDN Send Connector


One Response to “Configure Exchange 2013 to send external email”

  1. CW

    This is exactly what I did and I still cannot send external email. Sending internal, receiving from both internal and external has no issues. I’m still trying to figure out where is the broken piece. I register a domain with godaddy and I have already use godaddy DNS Manager to create a MX record.


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