Sorry if this is in the wrong forum. Please move if it isn't.
I have a member of my site who can login and access all the areas he has permission to, however when he tries to post he gets this message
The host from which you are accessing the board is not recognized as a valid host. This is more than likely related to a firewall issue that is blocking the referer variable. Check your firewall settings and try again.
Does anyone know how I can help him to resolve this problem. He isn't particularly 'computer literate' however his presence on my forums is pivotal. Please help!!
