Delivery to the following recipient failed permanently:

[url=mailto:[email protected]][email protected][/url]

Technical details of permanent failure:
Google tried to deliver your message, but it was rejected by the server for the recipient domain [url=http://yahoo.com/]yahoo.com[/url] by [url=http://mta7.am0.yahoodns.net/]mta7.am0.yahoodns.net[/url]. [url=tel:%5B66.196.118.37][66.196.118.37[/url]].

The error that the other server returned was:
554 delivery error: dd This user doesn't have a [url=http://yahoo.com/]yahoo.com[/url] account ([url=mailto:[email protected]][email protected][/url]) [0] - [url=http://mta1431.mail.bf1.yahoo.com/]mta1431.mail.bf1.yahoo.com[/url]