In Phish Threat V1, new enrollee or campaign emails will fail to send. Participants will not receive the intended campaign or communication emails and receive the following "Error Sending" status for any new emails. Sophos development team is currently working on the issue.
For more information, please refer to this article. This article will be updated when more information becomes available.
Phish V1 campaigns are now sending emails as expected and the issue has been resolved.
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