The rules in one account are not working. I.e. I have created a rule to reply to all incoming e-mails in two accounts, and in one account this doesn't work. Also a rule just to move the incoming e-mails to a folder does nothing. I am very sure that the rule was created in the correct way.

Is there a switch somewhere to disable rules, or something?
Or where do I start looking to fix this problem?

This problem is somewhat urgent, I am afraid.
So I thank you for any help possible!