re : but says they require authentication

The info you show in the images does not have correct 'Username'. The 'Username' needs to be the full email address.

Thanks for the reply But have tried putting my full username in and still cannot send emails any other suggestions would be very welcome, I wonder if any one else has had problems sending emails through BT isp? BT so far have been any help have used the outgoing setting they suggested

I use bt. I have a bt email address and it uses exactly the same server settings as you show with the exception that username is full bt email address.

I also have another email address, as I have website. But I also use the bt server to send emails for that different email address, but because it uses the bt smtp default, it will be using the bt email address as username.

Bt account via webmail is set up to allow the sending of hosting website email address via smtp of bt account.

so put your full bt internet email address in the 'user name'.

Thanks so much Toad-Hall it worked, I had been trying most of the morning to sort it out I wish BT had made it clearer as what to do Thanks again Richard