Turn on reverse dns check during the night

Have any one done this before?I want to use reverse dns check to blcok spam, and there are always one or two people uses email that does not have reverse dns setup. I do not know a way to allows certain eamil address to come in to by pass the dns check. But since all spam usually come during the night, so I am thinking to turn on dns chceck may be after 5:30PM, and then trun it back on around 7 AM.

Any way to automat this process? or any way to allow an email address to come in to bypass dns check.

Thanks!

Greg

Subject: Turn on reverse dns check during the night

Ugh, this would be tricky… you could do the following, but I strongly recommend against it:

Run an agent to change the configuration document at a specific time.

Create a program document to stop the smtp task.

Create a program document to start the SMTP task.

Create a second agent that checks to see if the first agent ran (Notes.ini entry for this).

Repeat the program documents.