Take it easy, deep breath...ok, let's try this again.
I was curious as to why you had your batch file creating directories, renaming directories, and stopping/starting the SMTP service, that's all. That's a alot of stuff going on versus simply deleting everything in the \badmail folder from a bat file. (and btw, I didn't say anything about doing all that "work", simply doing all that)
You say MS recommends this? Ok, that's cool, can you tell me where they recommend this? I'm curious because when you stop/start the SMTP service, you temporarily inhibit the ability of your exchange server to receive email, that's all. I try to keep my starting/stopping to a complete minimum. If MS recommends it, they usually have a reason, and I'd like to research this and perhaps mod my routine.
I'm Certifiable, not certified.
It just means my answers are from experience, not a book.