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If a problem occurs when you are using email, you may get an error message or error code which tells you the cause of the problem. For example, the image below shows what could happen when using Outlook Express. The error code given in the example is shown as 'Error number 0x800CCC79'.

If your error code matches any of those below then click on the link to read how to rectify the problem or you can use our email trouble shooting wizard (compatible with Microsoft Outlook 2003 to 2010, Outlook Express and Windows Live Mail):

Outlook & Outlook Express error messages

 0x800CCC79 - Recipient not authorised / Unknown local user 
 0x800CCC0D - Cannot locate server 
 0x800CCC0F - Connection dropped 
 0x800CCC0E - Cannot connect to server 
 0x800CCC18 - Logon attempt failed 
 0x800CCC19 - Operation timed out 
 0x800CCC90 - Client response invalid 
 0x800CCC91 - POP3 username invalid 
 0x800CCC92 - POP3 password invalid 
 0x800CCC0E or 0x800CCC0D errors 
 Can I correct the 553 error message I'm getting when I try sending from Outlook 2003? 
 How to verify email addresses (to avoid getting Error 553 when sending email)

Other error messages

 What does it mean if I see the message 'Server Error 500'? 
 I'm getting 'server rejected the sender's email address' error 
 Troubleshooting other problems and errors for email

Further information

If you're having problems setting up your BT Yahoo! email address with Microsoft Outlook, Outlook Express or Windows Live Mail you can use our email set-up wizard to do this automatically:

 Use our email set-up wizard

Easy tips and solutions to help you resolve problems with your email.

Are you having problems sending or receiving emails? Try following the guidance below to help you fix any issues you have.

Client set-up

If you're having problems setting up your email client, or you've set it up but have problems with it, you can check out our guides for the most popular clients.

See: Setting up email with different email programs.

Server settings

If you're using a client that we don't have set-up guides for, you'll find the server settings you need by clicking here.

Username & password

Please click here if you've forgotton your username or password.

You can login to webmail at http://www.talktalk.co.uk/mail

If you're having trouble logging in to the new email in your web browser, please make sure you've tried all of these options:

• Double-check your password. Is the Caps Lock key on?
• Reset your password. In some cases, login problems can be resolved by resetting the password After you reset your password, wait 5 minutes to make sure the new password is enabled, and then login again.
• Try webmail and an email client. If you're having trouble with Outlook, try logging in to webmail. If webmail is giving you problems, try Outlook, Windows Live Mail, Thunderbird, or another email client.  How to connect with an email client
• Typed the wrong password too often? To prevent security issues, your account will temporarily lock if you type the wrong password too many times. Wait one hour, then try logging in again.
• Is your billing up to date? If there is a problem with the billing information for your broadband account, you may have trouble logging into webmail.
• Update your browser: Make sure you are using the latest version of your web browser. For more information on updating your web browser, please see - Upgrade to a supported web browser
• Did you see an error? If you see an error message when trying to login, write it down before contacting customer support.

What to do if JavaScript is not enabled

You need to use a JavaScript-enabled browser to log into webmail. If JavaScript is disabled, you may see a message like this:

To enable JavaScript, follow the steps for your browser below.

Internet Explorer

You can enable JavaScript by lowering your security settings to Medium. To do this, follow the steps below in Internet Explorer:

1. At the top of the screen, click Tools and select Internet Options.
2. Select the Security tab.
3. Click the Custom Level... button.
4. In the Reset to box, change the setting to Medium as indicated in the image below.
   
   
5. Click Reset and click Yes.

Now, close Internet Explorer and open it again. Try to log into webmail.

Firefox

To enable JavaScript in Firefox, follow the steps below:

1. Click Tools and select Options.
2. Select Content.
3. Tick .
4. Click OK.

Now, close Firefox and open it again. Try to log into webmail at http://www.talktalk.co.uk/mail.

If you can't send email, your email program may display an error message containing "error code 550" or "error code 0x800CCC79". It may also say "Recipient Not Authorised" or "Unknown Local User". There are three main reasons for receiving these error messages, please see below for the appropriate solution:

Authentication failure

If you are trying to send email from and to a valid email address and you receive an Error 550 message then the first thing to check is that your email program is set up for SMTP authentication.

To protect our email server from abuse by spammers, we only allow our own customers to use it. We do this by insisting that all emails sent through BT Yahoo! have SMTP authentication to prove where they came from. The link below will help you with this problem:

Sending from an invalid address

If you are trying to send email from an invalid email address you'll get an Error 550 message saying: "Server Response: '550 Recipient Not Authorised [recipient rejected due to no authorised destination groups]".

So if the address you are sending from does not appear to be valid, our server will not send the email. Please check the following: 

• The address you are sending from was spelled correctly when you set up your mail account, you may find the link below can help you:
  
   Read an introduction to setting up email
• It is at least 24 hours since the email address was created (this is because it may take our system up to a day to activate a new address).

Sending to an invalid address

If the address you are sending from is valid, then there may be a problem with the address you are sending to.

If you are trying to send an email to an invalid @btinternet.com or @btopenworld.com email address then you'll get an Error 550 message saying: "Server Response: '550 unknown local user".

Alternatively, if you are trying to send an email to a different mail server (to an email address that does not contain @btinternet or @btopenworld) then you may receive a "Delivery Status Notification (Failure)" email from the destination mail server.

Please check the following: 

• The address you are sending to is spelled correctly.
• There are no service problems with the destination mail server.

Further information

If you're having problems with your emails or your're receiving error messages, please use the link below for further information about error messages and how to resolve them:

You can connect to your TalkTalk e-mail mailbox via a number of devices and software applications.

For instructions on how to set up your e-mail on some of the most common software applications and devices, see How do I set up my TalkTalk email?

Unfortunately we cannot provide help for all devices and software applications as they are not TalkTalk products. However, if your software application or device isn't listed, all you need to connect to your TalkTalk e-mail mailbox is the TalkTalk e-mail settings. These are listed below.

Required settings

The settings below are required from any e-mail application or device:

Email client settings

Here are the mail server settings for customers who have email addresses from TalkTalk, Tiscali, Lineone and other providers.

Note: These settings work when connecting to the internet with TalkTalk. The SMTP setting will be different if you are using another internet service provider or a mobile phone.

TalkTalk Settings

Tiscali Settings

Lineone Settings

Tinyworld Settings

Tinyonline Settings

World Online Settings

Screaming.net Settings

Gateway Settings

Optional settings

If required, here are some optional settings that you may or may not be asked:

• Incoming mail account type: POP3
• Incoming mail port: 110
• Log on using SPA: Leave unticked
• Authentication: None
• Outgoing mail port: 25
• Use SSL: Leave unticked
• IMAP: mail.talktalk.net

You can now manage all your email addresses and passwords through My Account.

Changing your email Password

Follow these simple steps to change your email password.

1. Go to the Email & Password My Account page (Can't log into My Account?)
2. Click Change password next to the relevant email address
3. Enter the new password in the New Password box and the Confirm Password box.
4. Click Confirm

The password will change immediately.

Email address does not show in My Account

If you can’t see your email address in My Account, you will need to add it by following these steps.

1. Go to the Email & Password My Account page (Can't log into My Account?)
2. Click Manage existing address.
3. Enter the first part of your email address into the box and select the relevant ending.
4. Enter the password for this email address
5. Click Submit

This address will now be visible in you’re My Account, and can be changed using the process above.