SMTP Authentication Required
To send emails again, you need to make a simple change
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To further protect you from receiving nuisance emails (spam), we've changed the way our email service works in order to stop emails being sent anonymously.
All you need to do is switch on SMTP authentication* in your email program on each computer you use.
How do I switch on SMTP authentication?
It's simple. SMTP authentication is usually switched on by ticking a box called 'My server requires authentication' in your email program's settings.
Error 553
If you're unable to send email and you're getting Error 553, it probably means you need to verify your account. See www.btyahoo.com/verify
Click here to see how to set up SMTP Authentication for a non-BT email account
*What is 'SMTP authentication' and why do I need to switch it on?
As part of a worldwide initiative aimed at reducing junk email (spam), all email providers are switching to what's known as SMTP authentication. SMTP stands for Simple Mail Transfer Protocol, which enables the sending of email. Authentication is a method of identifying the origin of emails that stops emails being sent anonymously.
Most nuisance emails (spam) are sent from people on unauthenticated email. By rejecting emails sent without authentication, spam will be substantially reduced.
BT Yahoo! Mail now requires all the emails you send to be authenticated. By switching on SMTP authentication now, you'll be able to send emails again.
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