Is there any way to manually fail a job dynamically based on some outcome in the Job's Code.

**Is there any way to manually fail a job dynamically based on some outcome in the Job's Code.**

Suppose a Background Job is to send a mail.
````csharp
[Queue("MailQueue")]
[DisplayName("Send mail to {0}")]
public static bool SendMail(string to, string body, PerformContext performContext)
{
var mailServer = new MailServer();
int errorCode = mailServer.Send(to, body);
if(errorCode == 1)
{
//Error code 1 means "To" address is expired. Now it doesn't make sense to retry
//TODO: Some way to manually fail this background job, so that it never re-triggers further.
return false;
}
else
{
return true;
}
````
Tried this:
````csharp
new BackgroundJobClient().ChangeState(performContext.BackgroundJob.Id, new Hangfire.States.FailedState(new ArgumentException($"No webhook registered for Keyword {keyword}")));
````
This results in adding a `Failed` state, but it gets scheduled again and re-triggers.


Is there any other way?

Start by reproducing the behavior with BackgroundJobClient.ChangeState and FailedState in the example. Trace how a failed state is scheduled again and identify the supported way to prevent retries for a job outcome such as an expired recipient. Done means the job is marked as failed without being re-triggered.

Written by the indexing model from the issue text.