A Microsoft service outage (see https://status.cloud.microsoft) is affecting calls to Microsoft’s APIs.

Seismic and Highspot tenant's configured to use the Microsoft Graph API to send their emails are currently failing and are not being delivered. Customers who send email through Microsoft Graph. Seismic - LiveSend sent by email, when the delivery method is configured to use Microsoft Graph - Digital Sales Room (DSR) sent by email, when the delivery method is configured to use Microsoft Graph - Bulk Email, when the delivery method is configured to use Microsoft Graph (desktop and embedded apps only) Highspot - Email Pitch or Digital Room sent by email, when the user has linked their Outlook email account Emails that fail during this outage are not retried automatically. Once Microsoft resolves the outage, affected users will need to rewrite and resend those emails. Emails sent by other delivery methods are not affected by this issue.