Exclaimer incident

Emails are getting Pending/Defer Status when sending Emails

Minor Resolved View vendor source →

Exclaimer experienced a minor incident on January 23, 2026 affecting EU: Server-Side: Mail Routing - Office 365 and US: Server-Side: Mail Routing - Office 365 and 1 more component, lasting 3d 11h. The incident has been resolved; the full update timeline is below.

Started
Jan 23, 2026, 02:39 AM UTC
Resolved
Jan 26, 2026, 02:33 PM UTC
Duration
3d 11h
Detected by Pingoru
Jan 23, 2026, 02:39 AM UTC

Affected components

EU: Server-Side: Mail Routing - Office 365US: Server-Side: Mail Routing - Office 365CA: Server-Side: Mail Routing - Office 365UAE: Server-Side: Mail Routing - Office 365AU: Server-Side: Mail Routing - Office 365UK: Server-Side: Mail Routing - Office 365DE: Server-Side: Mail Routing - Office 365

Update timeline

  1. investigating Jan 23, 2026, 02:39 AM UTC

    We are currently investigating an issue affecting email delivery within our Exclaimer services. Email routed through Exchange Online may be impacted due to an ongoing Microsoft incident (MO1221364).

  2. monitoring Jan 23, 2026, 06:32 AM UTC

    We have confirmed that Microsoft has deployed a fix to address the issue and confirmed resolution for Incident (MO1221364). We are continuing to monitor the service for stability.

  3. monitoring Jan 23, 2026, 06:38 AM UTC

    We are continuing to monitor for any further issues.

  4. resolved Jan 26, 2026, 02:33 PM UTC

    No further issues with mail flow have been identified over the weekend that were caused by this incident. If you are continuing to experience issues with your Exclaimer Subscription, please don't hesitate to reach out, and our team will be more than happy to assist.