Exclaimer incident

We are investigating a possible service alert.

Minor Resolved View vendor source →

Exclaimer experienced a minor incident on May 22, 2025 affecting AU: Server-Side: Mail Routing - Office 365 and UK: Server-Side: Mail Routing - Office 365, lasting 4h 6m. The incident has been resolved; the full update timeline is below.

Started
May 22, 2025, 06:06 AM UTC
Resolved
May 22, 2025, 10:12 AM UTC
Duration
4h 6m
Detected by Pingoru
May 22, 2025, 06:06 AM UTC

Affected components

AU: Server-Side: Mail Routing - Office 365UK: Server-Side: Mail Routing - Office 365

Update timeline

  1. investigating May 22, 2025, 06:06 AM UTC

    We are investigating a possible service alert. Issue: Server-side signatures are causing email delivery delays Symptoms: Users using server-side signature solutions may experience email delay NDR Next Update In: TBC

  2. identified May 22, 2025, 07:09 AM UTC

    Update: Exclaimer engineers have confirmed that the reported issue is linked to the ongoing Microsoft service alert EX1079935, which is currently impacting the AU region only at this time. You can view the Microsoft service alert here: Microsoft Service Health Dashboard – EX1079935 http://admin.microsoft.com/Adminportal/Home?ref=/servicehealth/:/alerts/EX1079935 Next Update: To be confirmed (TBC)

  3. resolved May 22, 2025, 10:12 AM UTC

    Our engineering team have been monitoring the issue reported by Microsoft and have noted a complete reduction in the number of messages that are being rejected or deferred by Microsoft relays at this time, indicating that the issue has now been resolved by Microsoft. If you are continuing to see mail flow issues, please reach out to our Support Team who will be able to assist further