I set up an email for myself (DNS hosted on Namecheap, but think the TXT records are set up correctly). When I send from Gmail or Yahoo to the email on MXroute, it bounces back with:
550: Please turn on SMTP Authentication in your mail client.
sonic310-21.consmr.mail.gq1.yahoo.com [188.8.131.52]:39333 is not
permitted to relay through this server without authentication
Or something very similar in Gmail. Any ideas what is going on?