Spam from website mail form

[thebunyans]

I've started to get spam from the email form that is on the main website. Is anybody else getting this? I might have to look into some way to make it less easy to use via automated/non human means.

Email content looks like...

This is an enquiry e-mail via http://mh.k313.com/mh from:
Francine Jacobs <uqkxrln@jijjka.com>

hi
dtep3zep315n5hd7
good luck