Using the error message to help fix a fault in BT Yahoo Mail

If you've get a problem when using email, you may get an error message or error code which tells you the cause. Follow the links to find out more about how to resolve the problem.

This help is about BT Yahoo Mail. If you use our new BT Mail service, you can find help here >

If you've get a problem when using email, you may get an error message or error code which tells you the cause.

If your error code matches any of those here, click on the link to get help.

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 >

 

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 >

 

 

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