The email could not be sent. Possible reason: your host may have disabled the ma

My lost password is not working. I have not tested other email sending features but it seems it could be an email problem. I am getting this error message: “The email could not be sent.
Possible reason: your host may have disabled the mail() function.”

I found a page in support from 8 months ago but the information did not seem to help the techs at liquidweb fix it. How can we fix this issue. I have it on two of my wordpress sites.