I heave searched Google for this and cannot seem to find a soloution

I have bsd-mailx on my server and it sends mail just fine

However I wished to have a development environment at home.

I need mailx such that php can use its mail function.

However the mail is failing to resolve the domain name @gmail.com

I am aware that my ISP talk talk may be blocking this is they have a mail server

smtp.talktalk.net

I assume I would have to add somthing to /etc/mail.rc and use heirloom maEdit turned out I had a instance of send mail running that was doing weird things.. after killing ilx not bsd-mailx,,but would still need to set default smtp relay

Im on ubuntu 12.4

thankyou

Edit turned out I had a instance of send mail running that was doing weird things.. after killing that, I was able to add the smtp relay, but its now saying that the sender domain does not work. I assume this domain has to route back the the same machine the mail originated from. as i dont have a domain for my home address.