The Biten Swap site cannot accept new registrations. It cannot speak to the underlying mail server.

Error with your mail server: SMTP code:554 msg:554-mail.com (mxgmxus001) Nemesis ESMTP Service not available 554-No SMTP service 554-Bad DNS PTR resource record. 554 For explanation visit http://postmaster.gmx.com/en/error-messages?ip=173.249.41.237&c=rdns