Magazine/Ezine Submission Question

I'm not too sure where to ask this question. So, I'm asking it here. On some magazine/ezine guidelines, they indicate that if you don't follow their guidelines completely they will automatically throw out your submission without reading it. I hate that some editors will throw away your story without even notifiying you about it.

My question is if your story gets thrown away for whatever reason then how long should you wait to submit it somewhere else without it being considered a simultaneous submission?

Maybe I wasn't clear enough. I was talking about if you like make a mistake like setting the margins wrong or something like that without noticing it before submitting it. I always try to do it their way but sometimes I overlook something.