The reason for inquiry is simple, It is very possible outlook will nt be able to create a rule specific for your needs.

There really is no set number of how many rules you can have. This limit is actually based on how much space the rules take up. With each rule being a different size you would have to wait until your excahnge server starts rejecting the creation of additional rules.

Note: the more updated exchange platform you are currently on, the more rules you can create.

If you require additional assistance in attempting to creating a rule in Outlook, just explain what you want done and i'm sure the commuity can help out.