How do I switch on SMTP authentication?

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To manually switch on SMTP authentication, locate the instructions for your email program from the list below. (You need to do this for each BT Yahoo! Mail account on each computer you use.)

Microsoft Outlook Express for PC

1. From the Tools menu, choose "Accounts"
2. Select the "Mail" tab
3. Double-click your BT Yahoo! account (probably labelled "mail.btinternet.com")
4. Select the "Servers" tab
5. Check the box next to "My Server Requires Authentication"
6. Click "OK"

Microsoft Outlook Express for Macintosh

1. From the Tools menu, select "Accounts"
2. Double-click on your BT Yahoo! Mail account
3. Under "Sending Mail," you will see "Click here for advanced server settings." Click this to open the settings.
4. Check the box next to "SMTP server requires authentication"
5. Click "OK"

Microsoft Outlook 2002 (XP) & 2003

1. From the Tools menu, choose "E-mail Accounts"
2. Select "View or change existing email accounts" and click the "Next" button
3. Select your BT Yahoo! Mail account and click the "Change" button
4. Click the "More Settings" button
5. On the "Outgoing Server" tab, check the box labeled "My outgoing server (SMTP) requires authentication" and choose the "Use same settings as my incoming mail server" option
6. Click "OK"

Note: Please make sure that "Log on using Secure Password Authentication" is not checked.

Microsoft Outlook 98 & 2000

1. From the Tools menu, choose "Accounts"
2. Select the "Mail" tab
3. Select your BT Yahoo! Mail account and click "Properties"
4. Click on the "Servers" tab
5. Check the box next to "My Server Requires Authentication"
6. Click "OK"

Note: Please make sure that "Log on using Secure Password Authentication" is not checked

IncrediMail 618 and higher

1. From the Tools menu, choose "Accounts"
2. Select your Yahoo! account and click the "Properties" button
3. Click on the "Servers" tab
4. Under Outgoing Mail Server, check the box next to "My Server Requires Authentication"
5. Click "OK," then "Close" on the Mail Accounts window

Microsoft Entourage 2001

1. Open Entourage and click "Tools"
2. Select "Accounts" from the pull-down menu
3. Double-click your BT Yahoo! account
4. On the Account Settings window, scroll to the "Sending Mail" category toward the bottom
5. Click on "Click here for Advanced Sending Options"
6. Check the box next to "SMTP Server Requires Authentication"
7. Close this window by clicking the tiny box in the upper-left corner
8. Click "OK"

To ensure the new settings are configured properly, we suggest closing Entourage and opening it again before sending or receiving messages.

MacMail

1. Go to "Mail"
2. Select "Preferences"
3. Select the BT Yahoo! account and choose "Edit Account"
4. Select the "Account Information" tab
5. Choose "Options"
6. Beside "Authentication" select "Password"
7. Click "OK"

For earlier versions of MacMail:

1. Go to "Mail"
2. Select "Preferences"
3. Select the BT Yahoo! account and choose "Edit Account"
4. Select the "Account Information" tab
5. Tick the box next to "Use authentication when sending mail"
6. Click "OK"

Eudora

1. Open Eudora
2. Click "Sending Mail"
3. Click the "Personalities" setting
4. Under "Sending Mail," ensure the SMTP Server is mail.btinternet.com
5. Tick the "Allow Authorisation" box
6. Click "OK"