Help CenterMicrosoft 365How do I set up a custom domain email with Microsoft 365?

How do I set up a custom domain email with Microsoft 365?

Step-by-step guide to connecting your domain to Microsoft 365 Exchange email.

Setting Up Custom Domain Email with Microsoft 365

### Step 1 — Add your domain

1. Go to admin.microsoft.com

2. Settings → Domains → Add domain

3. Enter your domain name

### Step 2 — Verify ownership

Add a TXT record to your DNS (e.g. MS=ms12345678). DNS propagation: 15 min–48 hours.

### Step 3 — Add DNS records for email

| Type | Name | Value |

|------|------|-------|

| MX | @ | yourcompany-com.mail.protection.outlook.com |

| TXT | @ | v=spf1 include:spf.protection.outlook.com -all |

| CNAME | autodiscover | autodiscover.outlook.com |

### Step 4 — Create mailboxes

Users → Active users → Add a user → Assign licence → They receive email at name@yourcompany.com

### Common Issues

  • **MX not updated:** Double-check MX record priority (0 or 10)
  • **SPF conflict:** Merge multiple SPF records into one
  • **Autodiscover failing:** Verify the CNAME record
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