Updates
Resolved
The deployed fixed worked and everything is operational again. We are deeply sorry for the interruptions here. The way to restore your broken domain verification is to navigate to your email integrations and hit 'configure' and then re-run DNS validation check. This will automatically resolve the issue. We are also taking steps so this flow is better hardened so these types of issues are prevented the next time.
Identified
We shipped a fix to fix the issue forward and will be monitoring.
Investigating
We currently have problems with new customers setting up email integrations in regards of domain verification. This currently fails so no new customers are able to setup working domains although DNS configuration settings all show as verified. We are currently investigating the issue. All already setup email integrations that successfully send emails are working without problems so no data is lost.