Fuad Yahya wrote:
The problem may in the end prove very simple and perhaps unrelated to Outlook itself, but, I don't see how Outlook 2000 could have any appeal at all in the automn days of 2005, especially considering the many security problems that are not addressed in Outlook 2000. To the best of my knowledge, Microsoft no longer supports Outlook 2000.
I would first upgrade to Outlook 2003, insall MS Office Update installer, run the Update utility from the Office Update page, install all the service packs and other patches, and then see if the problem does not resolve. If it persists, then your email service provider should be contacted to make sure you have the email settings properly assigned.
As far as I know, Outlook is not free. If I were you I would download Thunderbird. As Fuad has already said, Outlook 2000 is no longer supported and any security issues will not be dealt with. And in any case, the security features in the latest edition of Outlook were already in Mozilla software a long time before, and you can be sure that Thunderbird already has features that won't appear for another couple of years in Outlook.
PS Get Firefox while you're at it.