Outlook 2002 Problems

Sounds as though the settings for the SMTP are incorrect.

SMTP ias Ok, I can send emails inside domain, problem for external,

Make sure your sending (SMTP) server is set to your local SMTP server. If you are trying to send to your yahoo mail server and you are on your local ISP it will not work. If you set your SMTP to your ISP SMTP server the message should go fine.

This depends upon the ISP to which you are connected while sending the email. If you are conected using one ISP and sending email using a different domain then you may not be able to send. For Example you are connected to AOL and trying to send using an EarthLink email address then you need to either use Authenticated SMTP settings of EarthLink or use the SMTP settings of AOL. However I have a few questions. 1) are you getting an error while sending an email or getting a bounced back email (Mail delivery failure notice). 2) A copy of the Exact error or the bounced back email.