I can't get mail on my iphone 5 even though I have 3G?

I've had my iphone 5 for a while, and so far there has been no problems with the mail. But today I switched my phone on and off a few times because I didn't have much battery, now all of a sudden when I go to refresh my mail, it comes up with 'can't get mail. Connection to the server failed' even though I have 3G.
I have rebooted, reset all systems, and signed out and signed back in again. Nothing is working.
My email is a live account.

A lot of people are having this problem. Donno when it will be fixed

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