What error message? You didn't show the actual error message, just a status
code that was part of the message. The test procedure sends a test e-mail
to your account and receives it from your same account. That is not a good
test to verify you can send e-mails anywhere other than to yourself,
especially to recipients on other domains.
You also never mentioned any of the following details:
- WHICH version of Outlook.
- What TYPE of e-mail account (POP, IMAP, HTTP/Deltasync, Exchange).
- WHICH version of Windows.
- The ENTIRE error message.
Based on the dearth of details you provided (just the error number), maybe
the following applies:
http://support.microsoft.com/kb/814441