I can receive mails for a prticular domain (ford.com) for over six months now, messages sent from our domain rtbriscoe.com gets to them. but cant get mails from them.
the error message shown below
This is the mail delivery agent at messagelabs.com.
I was not able to deliver your message to the following addresses.
Sorry, I couldn't find any host by that name. (#4.1.2) Despite repeated attempts, this message could not be delivered.