: Migrating DNS while retaining email hosting from Microsoft 365 The title might be a bit misleading but I don't know how else to describe my situation. Situation: Client have registered a domain

@Nimeshi995

Microsoft 365 requires a few records in order to work correctly and for the website to work you just need to use the A records of your web host.

Website Records Example

| TYPE | NAME | VALUE |
|-----------|--------------|----------------------------------------|
| A | @ | 165.138.200.221 |
| A | www | 165.138.200.221 |
| AAAA | @ | 0:0:0:0:0:ffff:a58a:c8dd |
| AAAA | www | 0:0:0:0:0:ffff:a58a:c8dd |

A = A Record IPv4 Address.
AAAA = AAAA Record IPv6 Address (optional).

165.138.200.221 is an IPv4 address example.
0:0:0:0:0:ffff:a58a:c8dd is an IPv6 address example.


Microsoft 365 Records

| TYPE | NAME | VALUE |
|-------|--------------|--------------------------------------------------|
| CNAME | autodiscover | autodiscover.outlook.com |
| MX | @ | example-com.mail.protection.outlook.com |
| TXT | @ | MS=ms12345678 |
| TXT | @ | v=spf1 include:spf.protection.outlook.com -all |

CNAME Very important and without it adding email accounts to devices is troublesome, since they do not ask for server details, its queried from the autodiscover.
MX Record should use priority 0 and the address can be found within the 365 Dashboard "edit domain".
MS=ms12345678 is responsible for domain verification found within the domains section within Office 365 dashboard.
v=spf is a SPF record that will reduce mail being mistakenly marked as spam


Microsoft Connectivity and Autodiscover

If you need to amend, remove or edit any Microsoft 365 related records then you should test it afterwards using Microsoft Remote Connectivity Analyzer, click the Office 365 tab and then you will need to obtain from your client:


Office 365 Administrator Email Address e.g tom@example.com
Internal Microsoft Account, looks like tom@silverfinch.onmicrosoft.com
Password


If you or your client rather use an account where you do not have access to billing or user information then he or she can add you as a Exchange Administrator, simply login to Office 365 Portal, and click add a user, then under 'Roles' check exchange administrator. Screenshots of this process can be found at the bottom of this answer.

Please note when creating the account they should uncheck any products in Product licenses, otherwise they are going to increase their monthly bill.

Name Server Change

If you are changing the name servers then you need to ensure that the one you are switching too already has these records in place otherwise your going to experience some downtime. Assuming the only thing you need to change is the A records, there will be zero downtime and email will be unaffected by the website.

Screenshots of adding an Exchange Administrator in Office 365

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