If you manage your domain's Microsoft records at your DNS hosting provider, you don't have to worry about the steps in this topic. Your website stays where it is and people can still get to it.
If Microsoft manages your DNS records, to route traffic to an existing public website hosted outside of Microsoft, after you add your domain to Microsoft, do the following:
Update DNS records in the Microsoft 365 admin center
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In the admin center, go to the Settings > Domains page.
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On the Domains page, select the domain and then choose DNS Records.
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Under DNS settings, select Custom Records.
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Select + New custom record and enter the following:
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For DNS type enter: A (Address)
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For Host name or Alias, type the following: @
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For IP Address, type the static IP address for your website where it's currently hosted (for example, 172.16.140.1).
This must be a static IP address for the website, not a dynamic IP address. Check with site where your website is hosted to make sure you can get a static IP address for your public website.
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Select Save.
In addition, you can create a CNAME record to help customers find your website.
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Select + New custom record and enter the following:
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For DNS type enter: CNAME (Alias)
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For Host name or Alias, type the following: www
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For Points to address, type the fully qualified domain name (FQDN) for your website (for example, contoso.com).
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Select Save.
Finally, do the following:When the NS records have been updated to point to Microsoft, your domain is all set up. An email will be routed to Microsoft, and traffic to your website address will continue to go to your current website host.
Set up your domain (host-specific instructions)
To start using a custom domain (contoso.com) with Microsoft 365, you need to verify your domain and configure your domain's DNS records.
You can add and manage DNS records using the administrative tools at your domain host, or give Microsoft control of your domain records and we'll set them up for you.
Select your domain host below for the exact steps. If you're not sure who your host is, see Find your domain registrar.
Let Microsoft 365 manage your DNS records
LET MICROSOFT 365 MANAGE YOUR DNS RECORDS 1&1 IONOS Amazon Web Services (AWS) Bluehost Google Domains Hostgator MyDomain Namecheap Network Solutions Or, learn how to change nameservers to set up Microsoft 365 with any domain registrar.
Manage your own DNS records
DNS Record Types
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A record: Returns a 32-bit IPv4 address, most commonly used to map hostnames to an IP address of the host.
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AAAA record: Returns a 128-bit IPv6 address, most commonly used to map hostnames to an IP address of the host.
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CNAME record: A type of DNS record that points a hostname to another hostname.
- Nameserver (NS) record: Delegates a DNS Zone to use the given authoritative name server. This record defines the Zone that will control the entire domain.
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Mail exchange (MX) record: Delegates all e-mail traffic to the specified server.
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SRV record: A record that specifies the location of services like SIP and LDAP servers.
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SOA record: A record that identifies the authoritative name server for a domain.
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CAA record: A record that allows domain owners to specify which certificate authorities can issue certificates for their domain.
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TXT record: A record that can be used to validate domain ownership and mitigate spam.
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DNSKEY record: A record that contains a public signing key that resolvers use to check DNSSEC signatures.
- CERT record: A record that stores encryption certificates that let users and servers know if a website is safe.
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