Job JobSchedulerDequeueMailJob should consider file watching

Current Situation

• Starting with release 1.11.4 sending mail is no longer a task that is performed within a JobScheduler Master.
• Instead, the Master is configured to store outgoing mail to the ./mail directory. The job chain ./live/sos/sendMail/sendMail is configured to watch the ./mail directory for incoming files and to send such files by mail accordingly.
• The JobSchedulerDequeueMailJob throws an error as it has not been adjusted to consider the behavior of mail files with file watching.

Desired Behavior

• Update the JobSchedulerDequeueMailJob to consider file watching.

Workaround

• If mail cannot be sent then mail files are appended the suffix ~.
• You can use a simple job for file operations as available from the attached scheduler_dequeue_mail.job.xml job to rename mail files by suppressing the suffix and therefore forcing a retry to send such files.