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So I have added a required field asking for a numeric value. It is a sort of anti-spam measure, where I formulated a qestion asking what is ten minus nine. The field is setup to accept only an answer of numeric 1.
My question is this: how is it possible for some messages to go through? Sometimes form is used and no answer is provided. Sometimes the form sends emails with answers other than 1 (487 for examle). And of course, is there any way to tackle this?
Thank you in advance.