ruby-on-rails – Rails 3.2,如何更改：从邮件中的值而不是默认

我试过这个,但它不起作用.知道为什么吗？

notifications_mailer.rb

class NotificationsMailer < ActionMailer::Base
  default to: "info@hikultura.com"

  def new_contact(message)
      @message = message
      mail(:subject => "[hiKultura.com] #{message.subject}",:from => message.email)
  end
end

的ContactController

class ContactController < ApplicationController

  def new
    @message = Contactmessage.new
  end

  def create
    @message = Contactmessage.new(params[:contactmessage])

    if @message.valid?
      NotificationsMailer.new_contact(@message).deliver
      redirect_to(root_path,:notice => "Message was successfully sent.")
    else
      flash.now.alert = "Please fill all fields."
      render :new
    end
  end

end

UPDATE

我跟踪了我在SO中发现的类似案例：reply_to和GMail.但是,当我点击回复时,仍显示：到电子邮件地址.我错过了什么？

notifications_mailer.rb

class NotificationsMailer < ActionMailer::Base

   default :from => 'no-reply@mydomain.com'

  def new_contact(message)
      @message = message
      mail(:reply_to => "mierda@hotmail.com",:subject => "[mydomain.com] #{message.subject}",:to => "admin@mydomain.com"
      )
  end
end