Ok, I've nearly given up on this!
Awaiting another call from BT this morning which I hope after my last call they will have spoken to YAHOO and confirmed that its a problem woth the servers!
Just a thought though, what so we think are the chances of it being an iPHONE/Apple related problem? I know speaking to apple in store they say no chance but....
It could be apple sticking their noses in. The routing may go through their servers to. I know iOS6 had a safari broswing meltdown because unbelivable address requests were routed through apple and someone there forgot to update something causing a very brief browsing blackout. You wouldn't think it should be any of their business but you never know with apple. Their recent efforts with iOS8 have been buggy to say the very least. But at the end of the day I suspect Yahoo is to blame here. Their server for BT is prob old, overworked and congested causing no end of issue. I gave up on push but even just cycling for email on my phone now can take minutes. Yahoo really are the pits. There is no real way of contacting them as they are aloof. I just want to get away to BT Mail, it surely cannot be much worse. Roll on migration!!
My iThings stopped receiving email at the weekend, I had to delete the account and set them up again, but I used the Yahoo option in mail set up and now I have push working. Someone has been buggering around with something but BT, Yahoo and Apple will all blame the others!