Since contrafort.net is invalid, I would setup Postman to use their real Hotmail account directly.
Or, if you can't get their password to do that, create a new account (with Google, or Hotmail or your web host) and setup Postman to use that.
The best solution is to fix contrafortt.net, that probably means paying someone like Google Apps or Office365 or GoDaddy to "host" the contrafort.net email.