CodeTwo Status Page

Jun 2, 2026 · resolved Jun 2

Microsoft reports in EX1331830 that their configuration changes have reached approximately 50% of the affected infrastructure and message queues are steadily improving. This is also confirmed by our telemetry. More information can be found in the Microsoft 365 Admin Center under EX1331830 (https://admin.cloud.microsoft/#/servicehealth/:/alerts/EX1331830), if accessible. CodeTwo is and has been operating normally throughout this incident. All emails were delivered with signatures attached. As the issue is no longer affecting our mail flow and is not related to CodeTwo infrastructure, we are resolving it. Our teams will continue to monitor the situation 24/7/365.

Mar 18, 2026 · resolved Mar 18

# Summary On March 18, 2026, a small subset of CodeTwo customers experienced temporary issues with email delivery. The incident was caused by a Microsoft networking and DNS‑related issue within Microsoft 365 infrastructure and was not the result of a failure in the CodeTwo service. # Impact * Only a limited number of customers were affected. * The issue occurred intermittently. * The impact was limited to customers whose mail flow depended on Microsoft 365 services affected by the incident. # Root cause Microsoft confirmed that the incident \(ID MO1255228\) was caused by a temporary issue with their networking infrastructure, where part of the infrastructure intended to handle production traffic was only partially reinstated. This led to DNS and load‑balancing issues, affecting services such as Exchange Online. The incident originated entirely within Microsoft’s infrastructure and was outside of CodeTwo’s control. # Resolution Microsoft manually reinstated the full networking infrastructure and confirmed service health recovery. Following this action, telemetry indicated stable and healthy service operation. # Why CodeTwo was affected CodeTwo services integrate directly with Microsoft 365 and Azure and rely on Microsoft‑managed DNS and networking components. DNS failures at the Microsoft platform level affect all services integrated with Microsoft 365, including third‑party solutions. There is no technically viable way for any Microsoft 365-integrated service to be fully immune to platform‑level DNS or networking failures on Microsoft’s side. # Preventive measures * CodeTwo services are monitored 24/7/365. * We operate redundant and failover‑capable infrastructure. * In case of Microsoft‑side incidents, we take all actions within our control to minimize customer impact, including traffic rerouting where technically possible. Microsoft stated that this type of incident has been extremely rare and committed to improving safeguards to prevent similar events in the future. # Current status Microsoft has confirmed that the affected services were fully restored and operating normally. No further issues related to this incident have been observed.

Feb 7, 2026 · resolved Feb 7

This incident has been resolved.

Jan 22, 2026 · resolved Jan 23

The fix implemented by the MS Exchange Online team worked and our service is fully operational again. The most recent update from Microsoft: "We’re continuing to see steady improvements in service availability for Exchange Online and Microsoft Teams and our broader recovery efforts remain actively underway. Engineers are further refining load balancing measures to accelerate recovery and are methodically addressing the remaining impacted services."

Jan 12, 2026 · resolved Jan 12

This incident has been resolved.