Platform: US - Email delivery issues

Incident Report for Delinea

Resolved

We’re pleased to inform you that the incident affecting outbound email delivery to certain external email providers has been resolved.

Our monitoring confirms that the affected provider has addressed the underlying issue that was causing intermittent “451 4.3.2 temporary server issue” responses. Email delivery to impacted mailboxes has since stabilized and is now functioning normally.

We apologize for any inconvenience this incident may have caused, and we appreciate your understanding and support.

For any questions or concerns, please reach out to our support team at https://support.delinea.com.
Posted Jan 23, 2026 - 03:00 EST

Identified

We are currently experiencing intermittent email delivery failures when sending messages to certain external email providers.

Our platform is receiving “451 4.3.2 temporary server issue” responses when attempting to deliver email to affected mailboxes. This indicates a temporary issue within the recipient email provider’s infrastructure, which may result in delayed or failed email delivery.

Customer Guidance:
Customers experiencing email delivery issues are encouraged to check with their email service provider for any ongoing service advisories or disruptions.

Next Update:
We will continue to monitor the situation and provide updates as more information becomes available.
Posted Jan 22, 2026 - 16:40 EST
This incident affected: US (Platform, Secret Server Cloud).