I did a whois on relaxingrex.com. It says that the domain was registered through godaddy.com, is hosted by godaddy, and the technical contact is http://www.hotmail.com/~nastia31 . I suggest that you email this person and tell them the problem. It may be that sonic.net has been incorrectly blacklisted by godaddy's mail servers, and they may already be going through the checklist described on http://www.rackaid.com/blog/godaddy-blacklist/ . > From: Noelle <http://dummy.us.eu.org/noelleg> > Date: Fri, 31 Jan 2014 10:00:49 -0800 (PST) > > > Date: Fri, 31 Jan 2014 09:52:23 -0800 > > From: Mail Delivery Subsystem <http://www.c.mail.sonic.net/~MAILER-DAEMON> > > > > The original message was received at Fri, 31 Jan 2014 09:52:20 -0800 > > from 173-228-7-7.dsl.static.sonic.net [173.228.7.7] > > > > ----- The following addresses had permanent fatal errors ----- > > <http://www.relaxingrex.com/~mail> > > (reason: 550 5.1.0 <http://dummy.us.eu.org/noelleg> sender rejected. IB504 > > - 64.142.111.80) > > > > ----- Transcript of session follows ----- > > ... while talking to smtp.secureserver.net.: > > >>> MAIL From:<http://dummy.us.eu.org/noelleg> SIZE=8712 > > <<< 550 5.1.0 <http://dummy.us.eu.org/noelleg> sender rejected. IB504 - > > 64.142.111.80 > > 554 5.0.0 Service unavailable > > > > Content-Type: message/delivery-status > > > > Reporting-MTA: dns; c.mail.sonic.net > > Received-From-MTA: DNS; 173-228-7-7.dsl.static.sonic.net > > Arrival-Date: Fri, 31 Jan 2014 09:52:20 -0800 > > > > Final-Recipient: RFC822; http://www.relaxingrex.com/~mail > > Action: failed > > Status: 5.1.0 > > Diagnostic-Code: SMTP; 550 5.1.0 <http://dummy.us.eu.org/noelleg> sender > > rejected. IB504 - 64.142.111.80 > > Last-Attempt-Date: Fri, 31 Jan 2014 09:52:23 -0800 > > > > Content-Type: message/rfc822 > > > > > Date: Fri, 31 Jan 2014 09:52:20 -0800 (PST) > > > From: Noelle <http://dummy.us.eu.org/noelleg> > > > Reply-To: http://dummy.us.eu.org/noelleg > > > To: James Ridgway <http://www.gmail.com/~jimridgway> > > > cc: anastasia lang <http://www.relaxingrex.com/~mail> > > > Subject: Re: Pocket watch