We encountered a situation where a direct approval email was sent as part of a Forms task. The email was seeking "Approve" or "Reject" as the response, but since the user had his out of office auto-response set, it responded with his out of office message and so the Forms email responded:
'The action '[Out of office message]' provided in your email approval is invalid. Please reply to the email with one of the following actions: Approve, Reject."
Is there a way for Forms to disregard out of office messages?