Cannot send email using Outlook 2003

  m800afc 11:48 10 Mar 2007
Locked

I cannot send email using Outlook 2003. This started last Thursday evening. I get error message 0x800CCC0D: Cannot find server.
My ISP is Tesco, they said everything is set up correctly. My domain is hosted by 1and1 and they too say everything is set up correctly. I can send and receive using Hotmail, Yahoo and Outlook Express. I can receive but not send using Outlook. I have reinstalled Outlook, but it made no difference. I use Windows XP Pro and my email is imap. Help would be greatly appreciated.

  Jackcoms 11:52 10 Mar 2007
  birdface 12:07 10 Mar 2007
  m800afc 16:38 10 Mar 2007

Thank you for the advice. I have looked at the pages suggested, but these have not really helped. They are for solving pop3 problems, whereas mine is an imap problem. Allthe settings have been verified by my domain hoster, 1and1. They have said it is an Outlook fault.

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