Connection to server failed phoned my bt said it was fixed 10th july

Contact the Apple support team at: https://www.apple.com/support/ipad/contact/

Did you check your internet connection? network people ping the ip address from your provider to check your connection.
And sometimes even the Yahoo website can be down for a little while.

Have your server walk you through setting (i.e.; Comcast)

Well, I would say that the connection to your mail server has apparently failed. Make sure that you have the server settings set correctly for your mail server. It might also be worth a try to remove the account and then re-add it again. Do you have another email account to test? Or, try accessing the Internet from your iPad. If the Internet works, it's just an issue with your mail server. Contact your email provider if none of the above fixes your problem.

Hi cheak is your phone is connected to internet and write your password once again if still no luck, cheak if you can log in on pc.
if you need more help let me know .
regards

Every iPad should be capable of sending email. You first have to setup the account, in settings, then email, then add new account.
While entering a new account, you have to fill in all settings correct, so you need to know it it is a POP or SMTP server, you must fill in the complete and correct e-mailadres and server name and the correct password. if filled in and you press next, the program will check the validity of the address. Only if the address exists and the password is correct it will tag everything green. Then you can use the mail address. It must be an existing mail address. You can't create new addresses in that part.
I'm not sure if you are running the iPad on a G3 or G4 network from BT, because that firm can try to block other mail, to save bandwidth, but I don't believe that.
You should be able to setup the BT account. If you keep having trouble setting up the BT account, visit a bt store and ask them to setup your mail address

If I understand correctly, you have an email account with btinternet. You say you haven't been able to access your inbox since 12th of July and posted this on the 13th. I don't think that 1 day is really enough time to start asking for solutions. It might just be a case of one of BT's servers going down. And if you want to find out why there's a problem and how to remedy the situation you should contact the people providing you with the service. BT.

You need to subscribe to that same BT Mail account on your iPad?

I’m happy to assist further over the phone at https://www.6ya.com/expert/ronald_f3c54257e2cc2559

lost password

Do either of these sets of mail server names help?

BT mail server names - Yahoo mail server names