```ruby
class UserMailer < ActionMailer::Base

  def reset_notification(user, request)
    @user = user
    @url = reset_users_url(:host => request.host_with_port,
                           :reset_code => user.perishable_token)
    mail(:to => user.email,
         :subject => I18n.translate('user_mailer.link_to_reset_your_password'))
  end

protected

  def url_prefix(request)
    "#{request.protocol}#{request.host_with_port}"
  end
end
```

Add :from key to UserMailer for password reset.
user
```ruby
class UserMailer < ActionMailer::Base

  def reset_notification(user, request)
    @user = user
    @url = reset_users_url(:host => request.host_with_port,
                           :reset_code => user.perishable_token)

    domain = request.domain(RefinerySetting.find_or_set(:tld_length, 1))

    mail(:to => user.email,
         :subject => I18n.translate('user_mailer.link_to_reset_your_password'),
         :from => "\"#{RefinerySetting[:site_name]}\" <no-reply@#{domain}>")
  end

protected

  def url_prefix(request)
    "#{request.protocol}#{request.host_with_port}"
  end
end
```
assistant