Outlook 2003 error 0x800CCC7D

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Occurs when you send an email via Outlook 2003 of error 0x800CCC7D with the following description:

your outgoing mail server (SMTP) support not using SSL encrypted connections. If you have previously established such connections to this server, contact your server administrator or Internet service provider.

Then, it should be checked whether the outgoing server encrypted connections actually supports SSL. He's doing it, then Service Pack 3 for Office 2003 is missing probably apparently encrypted connections are not fully recognized without this update SSL, causing this error message incorrectly suspected of the outgoing mail server.