Outlook 2003 "Sending reported error 0x80040201 Unknown Error"

Sending reported error 0x80040201 Unknown Error.

Simple POP3 configuration. mail.bellsouth.net (Test email settings works fine)
No firewall
I've done a detect and repaire (No help)
Deleted account and re-added it.
Outlook express works also, with the same settings.
Linksys wireless router (default settings) except admin password and IP address.
I've searched Microsoft KB no help.
Any ideas?
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What90Connect With a Mentor Commented:
Here someone who had the same problem and how it got fixed:

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