I have a quick enquiry form on my website, I often receive garbled emails. I assume these are being sent by machines not people but why, what do they achieve? Are they harmful?
The message I get will be something like:
Brief: pqoolste.hsbqijdeftjho, http://www.ywcpaxlupc.com wdddtbzzaj
I would prefer not to add captcha to the form unless these emails are harmful.
Any advice/explanations most appreciated.