When queue is not running and scheduler is, mailator overfloods the queue

[dstollie]

Context

We came in a situation w here the our queue was not running. After a few hours we've seen this and started the queue. Immediately the queue was being cleared. From so far, everything looked fine until we saw that Mailator dispatched the same mail everytime.

The problem

The problem here lies that the scheduler from mailator see that the mail has not yet been sent and disptaches a new job onto the queue. Normally this is no problem but when the job is STILL on the queue, this is a problem. In our situation we had a few customers receiving more than 100 mails.

This is a serious problem for us because it can happen in the future that the scheduler is running but the queue is not, how can we avoid this problem, does the author have an idea?