Outage in CM.com
Email Campaigns - Increased soft bounces to Microsoft and iCloud recipients
Resolved MinorIncident Report
Summary AI Generated
Email campaign deliveries to Microsoft-hosted mailboxes (Outlook, Hotmail, Live, Microsoft 365) and iCloud were experiencing increased soft bounces due to rejections from those providers. The incident lasted approximately 1.1 hours, with other email providers unaffected. CM.com resolved the issue by making changes to their sending infrastructure, after which bounce rates returned to normal.
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.
Components affected
CM.com Email CampaignsTrusted by 1,000+ teams
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Latest Updates ( sorted recent to last )
RESOLVED
3 days ago - at 10/02/2026 02:01PM
We have made changes to our sending infrastructure and bounce rates have returned to normal levels. We apologize for the inconvenience.
INVESTIGATING
3 days ago - at 10/02/2026 12:57PM
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.
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