CM.com incident

Email Campaigns - Increased soft bounces to Microsoft and iCloud recipients

Minor Resolved View vendor source →

CM.com experienced a minor incident on October 2, 2026 affecting Email Campaigns, lasting 1h 4m. The incident has been resolved; the full update timeline is below.

Started
Oct 02, 2026, 12:57 PM UTC
Resolved
Oct 02, 2026, 02:01 PM UTC
Duration
1h 4m
Detected by Pingoru
Oct 02, 2026, 12:57 PM UTC

Affected components

Email Campaigns

Update timeline

  1. investigating Oct 02, 2026, 12:57 PM UTC

    We are investigating an issue where part of the email campaign traffic to Microsoft-hosted mailboxes (Outlook, Hotmail, Live, Microsoft 365) and iCloud mailboxes is being rejected, resulting in an increased number of bounces. Delivery to other email providers is not affected.

  2. resolved Oct 02, 2026, 02:01 PM UTC

    We have made changes to our sending infrastructure and bounce rates have returned to normal levels. We apologize for the inconvenience.