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A new version of Exchange Server 2016 is introduced in the business. There is an Exchange 2010 running. An issue was discovered after migrating the mailboxes over to the exchange server in 2016. The issue is that mail is not getting sent to Exchange mailboxes since 2010. In this article, you’ll discover why Exchange’s internal mail flow for 2016 isn’t functioning properly.
Information
The company has Exchange Server 2010. A new version of Exchange Server 2016 is installed and is configured within the company. First mailboxes for testing are being transferred. In addition, new test mailboxes are being created from Exchange 2016 databases. Exchange 2016 database. The emails delivered via Exchange 2016 mailboxes to Exchange 2010 mailboxes aren’t delivered.
Troubleshoot Exchange 2016 internal mail flow is not working
Let’s make some email exchanges to each of the Exchange Server mailboxes. The following results show:
Email received via Exchange 2010 up to Exchange 2016 working
Emails sent via Exchange 2016 to an external recipient working
The email sent by Exchange 2016 to an internal receiver not working
It doesn’t matter if your mailbox has been moved into Exchange 2016 or is an all-new mailbox created on Exchange 2016 or Exchange 2016. Database. Both are experiencing the same issue. The sending from Exchange the 2016 email address to Exchange 2010 isn’t working. The emails are not being delivered.
Let’s review the queue that is available on Exchange Server 2016. Run Exchange Management Shell as administrator. Start the Get-Queue cmdlet.
[PS] C:\>Get-Queue Identity DeliveryType Status MessageCount Velocity RiskLevel OutboundIPPool NextHopDomain ——– ———— —— ———— ——– ——— ————– ————- EX02\3 SmtpRelayToMailboxDeliveryGroup Retry 25 0 Normal 0 site:eu-london; version:14 EX02\Submission Undefined Ready 0 0 Normal 0 Submission
Copy
The emails are on the waiting list. The SmtpRelayToMailboxDeliveryGroup is showing that 25 emails are in the queue. The test emails are which were sent by Exchange 2016 to Exchange 2010. Mailboxes.
Solution Exchange 2016 internal mail flow
The issue is that the Receive connector in Exchange 2010 is not correctly set up. Check out the Exchange 2010 connectors for receiving. It is possible to open the connector for receiving via Exchange 2010 or Exchange 2016. It is recommended to work with Exchange Server 2016.
Always ensure you are using the most recent Exchange version if you wish to manage several Versions of Exchange Servers.
Important:
Find an IP address for your Exchange Server 2016.
Use the command prompt to use this command Ipconfig.
Record the IP address.
Take a look at the default connector for receiving on Exchange 2010. Exchange 2010. Click to scope from the left and look at the IP addresses. The default connector for receiving will look similar to the below image.
Check out all the other connectors to receive. Start the receive connectors, then select on scoping. Search for an IP address for the Exchange Server 2016. In my case, a connector was set up to relay emails. The IP address for the Exchange Server 2016 was added to the list of IP addresses. Eliminate this Exchange server 2016’s IP. Select “Save.” An IP Address range has likely been included in the listing instead of just one IP address. Change the range of IP addresses and ensure there is no IP address of Exchange Server 2016 is not listed on the list.
The service must be restarted—Microsoft Exchange Transport the Exchange Server 2010. The queued emails are being sent.
What caused this to take place?
It may be possible that your IP was created for a different device. For instance, printing. It was removed physically from the office. Its IP was removed from DHCP; however, it wasn’t deleted from Exchange’s Exchange connector for receiving in 2010. Before installing the new Exchange Server 2016, the IP address was reserved. When an IP number isn’t properly registered and reserved, it may be used. The administrator was unaware that an IP address was set in the receiver connector.
Conclusion
The article below will tell you will learn the reason Exchange 2016’s internal mail flow isn’t functioning. Examine the Receive connectors for your Exchange Server 2010. Do not forget to start Exchange Transport. Microsoft Exchange Transport service. Always verify the Receive connectors on Exchange Servers before installing the new Exchange Server.
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