Knowledge Base

Connect a Domain to Your Microsoft 365

This article outlines how to configure all necessary DNS records for using Exchange Online email from Vodien's Microsoft 365. Proper DNS setup is essential for verifying domain ownership, securing your email communications, ensuring reliable mail delivery, and enabling seamless integration with supported email clients and Microsoft 365 services.

To activate and secure Exchange Online email, you must add the following DNS records to your domain’s DNS settings:

NOTE. Since Microsoft 365 DNS records are unique for every customer, you can find the required DNS values in your Microsoft 365 admin center or from the email we sent you.

DNS for domain verification (required)

Name / Host / Alias	Record Type	TXT Value	Note
`<yourdomain.com>`	`TXT`	`<MS=ms12345678>`	There should only be one TXT record with domain verification code for <yourdomain.com>

DNS for mailbox activation (required)

Name / Host / Alias	Record Type	Priority	Value / Destination / MX Server / Target	Note
`<yourdomain.com>`	`TXT`	`0` or `1`	`<yourdomain-com.mail.protection.outlook.com>`	There should only be one MX record for <yourdomain.com>

DNS for automatic email client setup (optional)

Name / Host / Alias	Record Type	Points to address / Target	Note
`autodiscover.<yourdomain.com>`	`CNAME`	`autodiscover.outlook.com`	There should only be one MX record for autodiscover.<yourdomain.com>

DNS for email spam protection (optional but highly recommended)

Name / Host / Alias	Record Type	Points to address / Target	Note
`<yourdomain.com>`	`TXT`	`v=spf1 include:spf.protection.outlook.com -all`	There should only be one TXT record for <yourdomain.com>* with v=spf format.*
`selector1._domainkey.<yourdomain.com>`	`CNAME`	`selector1-<your-domain-with-dashes>._domainkey.<tenant>.onmicrosoft.com`	There should only be one CNAME record for selector1._domainkey.<yourdomain.com>.
`selector2._domainkey.<yourdomain.com>`	`CNAME`	`selector2-<your-domain-with-dashes>._domainkey.<tenant>.onmicrosoft.com`	There should only be one CNAME record for selector2._domainkey.<yourdomain.com>.

DNS for other Microsoft 365 services

Name / Host / Alias Record Type Points to address / Target Note

Name / Host / Alias	Record Type	Points to address / Target	Note
`enterpriseregistration.<yourdomain.com>`	`CNAME`	`enterpriseregistration.windows.net`	Required for Microsoft Entra ID device registration There should only be one CNAME record for enterpriseregistration.<yourdomain.com>.
`enterpriseenrollment.<yourdomain.com>`	`CNAME`	`enterpriseenrollment-s.manage.microsoft.com`	Required for Microsoft Intune / MDM enrollment There should only be one CNAME record for enterpriseenrollment.<yourdomain.com>.

enterpriseregistration.<yourdomain.com>

CNAME

enterpriseregistration.windows.net

Required for Microsoft Entra ID device registration

There should only be one CNAME record for enterpriseregistration.<yourdomain.com>.

enterpriseenrollment.<yourdomain.com>

CNAME

enterpriseenrollment-s.manage.microsoft.com

Required for Microsoft Intune / MDM enrollment

There should only be one CNAME record for enterpriseenrollment.<yourdomain.com>.

Instructions for specific DNS zone

The process for adding these records depends on where your DNS is managed. Use the instructions that match your DNS zone:

NOTE. To find out where your DNS zone is found, read Vodien DNS guide.

General steps

Follow these steps if your DNS is hosted with another provider.

Go to the DNS settings of your domain.
Add the required DNS records.
Wait for the changes to take effect. DNS update may take up to 72 hours to work.

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