Problem with Sending Email outside of Domain

From: Pauravi (anonymous_at_discussions.microsoft.com)
Date: 02/12/04 

Date: Thu, 12 Feb 2004 07:41:08 -0800

Hi,

I am making a project that sends emails.I m using System.Web.Mail and smtpMail.Send() to send emails.

i have set my SmtpMail.SmtpServer to my remote server

The problem is,
I m not able to send emails outside of my domain that is to hotmail ,yahoo or indiatimes,etc.But i m able to send thru Outlook Express that configured with this smtp server.

Also my server requires Authentication?How to go about it in my project?

Please help me to solve this problem.

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