Thanks for your help

I used this code: WS2_32.DLL: sending email messages (SMTP, port 25)

but I recived the message below when I sent email to hotmail ou yahoo server:
503 This mail server requires authentication when attempting to send to a non-local e-mail address. Please check your mail client settings or contact your administrator to verify that the domain or address is defined for this server.

How can I configure it?

Romulo