office365migration

It appears that the Exchange Server mail flow is excellent. As of now, there is only one domain registered. However, you would want to add another Domain to the Exchange Server on-premises. This article will show you how to connect a second domain to Exchange Server 2013/2016/2019.
Information
To add another domain to Exchange Server, it is necessary to include the domain’s records in its Public DNS. If you do not have these records, mail flow won’t function because it doesn’t know where to send it. In our case, we’ll add details to the domain exoip.nl.
Make Public DNS records
Include the following records in the Public DNS. If you already have records set up, take more of a look. If you have multiple records of the same type, the mail flow won’t be as smooth as it should.
MX records connect at Exchange Server mail.exoip.com.
SPF Record to permit email servers to communicate using the domain.
The record refers to the MX record’s IP address to enable autodiscovery with mobiles (iOS/Android).
SRV record for auto-discover, so you don’t get a certificate error.
When you add to the SRV automatic discover records, you can add multiple domains and utilize one SAN (Subject Alternative Name) certificate, also known as a multi-domain certification.
The changes won’t immediately be apparent when you record the changes. It will depend on the configured TTL. If you entered the records for the first time, you’d have the records available within 5 to 10 minutes.
Notice: The DNS propagation could last as long as 72 hours.
Find public DNS records
When you add another domain to Exchange Server, it’s always important to confirm the Public DNS records. Visit the website MxToolBox to search for the records. You could also use Command Prompt or PowerShell to make the record lookups.
MX record
Enter the domain name and click “MX Lookup.”
Record of SPF
Enter the domain name and click the SPF record lookup.
A record
Complete the autodiscover record and then click DNS Lookup.
Record of SRV
Include the auto-discover SRV record and then click the SRV Lookup.
After adding and verifying our Public DNS records, we need to add the 2nd domain to Exchange Server.
Add a second domain
Log into Exchange Admin Center. Select Mail stream within the features pane. Followed by acceptable domains on the left side. Use the plus icon on the toolbar to add an accepting environment.
Enter the domain name in both the domain name and acceptable domain fields. Select to save.
We have added our domain name to the accepted list of domains. In our instance, the domain obtained is exoip.nl.
It is the next thing to do adding the domain to be used as an alias or an email account that is the default for that mailbox(es).
Conclusion
In the article below, you will learn how to add a new Domain to Exchange Server. Create the MX record, A record, SRV record, and an SPF record to the DNS Public. Once you have done that, check that you created your records correctly. You can include the new domain in Exchange Server.
Did you like this article? If yes, then you’ll find it interesting. It. However, you can’t use the domain as it isn’t an approved domain for your business. Be sure to follow us on Twitter and share this post.

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