Microsoft 365 Alert – Service Degradation – Exchange Online – Some users may not receive One-Time Passcode (OTP) email messages for encrypted messages in Exchange Online – ONGOING
02/07/2025 08:55:00 AM
NHSmail Reference: INC46569425
Microsoft Reference: EX1107369
Issue Status: ONGOING
Issue Description: Some users may not receive One-Time Passcode (OTP) email messages for encrypted messages in Exchange Online.
More info: Impact only occurs for users that have a process configured to perform a Domain Name System (DNS) check on incoming email messages.
Current Update: 02/07/2025 08:55:00 AM – Microsoft have corrected the DNS record configurations for the affected domain and are reaching out to a sample of affected users to confirm whether the impact is remediated.
Scope of impact: Some users expecting to receive OTP email messages for encrypted email messages in Exchange Online may be impacted.
Root cause: DNS records for the domain that provides OTP email messages to encrypted messages became misconfigured, which is causing impact.
Next update by: Wednesday, July 2, 2025, at 7:00 PM UTC