InsightsSecurity

Scanners and printers that send email? SMTP AUTH is turned off in December

Many multifunction printers, scanners, and older line-of-business systems send email with basic password sign-in. It stops working by default at year-end.

· 2 min read

What is changing?

Exchange Online will turn off Basic Authentication for SMTP AUTH by default for existing tenants at the end of December 2026. New tenants created after that won't have the option at all. Microsoft will announce the final removal date in the second half of 2027.

Microsoft has postponed the change several times, but this time the timeline is clear.

Who is affected?

Typically, it's devices and systems that send email with a username and password: scan-to-email scanners, alerting systems, older line-of-business systems, and scripts. The Exchange admin center has a report that shows whether submissions use Basic Auth or OAuth.

The alternatives

Devices that support OAuth can switch to it. Other options include Microsoft 365 High Volume Email for internal recipients or a relay service.

What we recommend

  • Run the SMTP AUTH report in the Exchange admin center
  • List the devices and systems that send email
  • Update or replace equipment that does not support OAuth

How we can help

Security and complianceEntra ID, Defender, and Purview.IT operations with iqonic CareOne partner for your entire Microsoft environment.

Wondering what this means for your organization? Let's talk.

Request a meeting →

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