A campaign is sent past the end date.

In Adobe Campaign Classic, the campaign end date is a critical setting that determines when a campaign will cease to send out communications. Once the defined end date of a campaign is reached, the system automatically prevents any further execution of the campaign tasks associated with sending emails or other forms of communication. This built-in functionality is designed to prevent sending outdated information to recipients and to adhere to the campaign's scheduled timeline. If a campaign needs to continue beyond its original end date, the end date in the campaign settings must be extended or updated accordingly.References:This explanation is derived from the standard operational procedures of campaign management systems like Adobe Campaign Classic, reflecting common practices in digital marketing campaign management.