No attachment, just a link in the 'contact us' part of the web page that brings up my email box, i write, click send & then the green 'sending in progress' progression bar arrives & 3 quarters of the way through, it quits & i get the above message in the sending box!
Marg7, do you mean i need to ask my isp if i can send mail to that address! The address is a medical organisation so i'm sure it's valid & ok!
As i say, other mails i send seem to work ok, maybe it is a temp error!!