Brother scan to email and Microsoft 365

At the end of December 2026 Microsoft 365 stops accepting username-and-password email from copiers (SMTP AUTH with basic authentication). If your Brother sends scans through smtp.office365.com with a password, it will stop. Here's how to check, and how to fix it.

Get Scan Relay, free 14-day trial Keeps your Brother scanning to email without changing its firmware.

Is your Brother affected?

In Web Based Management (the machine's IP address in a browser), log in and open Network, then Protocol, then the SMTP Advanced Settings, or the Email tab on some models.

If the SMTP server is smtp.office365.com (usually port 587) and the copier signs in with a Microsoft 365 email address and password, it's affected. Menu names vary by model; your dealer can also check over the phone. Or answer three quick questions and see.

What Brother offers

Some current Brother models have added Microsoft 365 OAuth in a firmware update. Most older Brother machines haven't. Ask your dealer whether your exact model and firmware can do it: if it can, that's the cleanest fix.

If your Brother can't use OAuth

Setting up the Brother for Scan Relay

  1. Install Scan Relay on a PC that stays on and sign in with the Microsoft 365 mailbox scans should come from.
  2. In the Brother's email settings, set the SMTP server to that PC's address (Scan Relay shows it), port 25, no SSL/TLS. Leave any username and password; Scan Relay ignores them.
  3. Send a test scan.

Test before the end of December, while the old way still works as a fallback. More detail is in the full guide. Copier dealers and IT providers can buy wholesale licenses.

Get Scan Relay, free 14-day trial Keeps your Brother scanning to email without changing its firmware.

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