Greetings Woolwell and thanks. I'm with Talk Talk and email interruptions are an all too frequent and regular occurrence, so I'm forever sending mail to myself, checking if it's back on. Never seen 452 before though and I've made about a dozen attempts. It started working about half an hour again, but it's playing up again now. I'm not aware of any spam filter, certainly never set one up.

Thanks again amigo,I've done it before and never been sent 452, but I'll ease up.

Thanks Borderview, seems like.....according to the forum (Not from Talk Talk, they've told us nothing so far!) it's connected with them moving their ex Tiscali customers across to the Talk Talk Servers. One problem follows another, never a dull moment (Or an uninterrupted service) with Talk Talk.

Thanks all, yes changing the smtp as Secret-Squirrel states, has seemed to do the trick.....until their next outtage!! This solution by the way has come from another customer, nothing at all from Tiscali despite pleas for help posted on their forum. Avoid.