Email notifications are sent with an invalid address

[Sivert3]

The email notifications sent from this board contains an invalid email address in the From, Reply-to, and Sender headers. The address given is "messageboard[at]dragnix.net", but this is not valid. It must either be "messageboard at dragnix.net" or "messageboard@dragnix.net". The result of having an invalid from address is that email agents such as gmail identify the mail as spam and label the sender as "(unknown sender)"