This thread is for discussions of Sending email from ASP.NET.

I have a problem. The script only works when the SMTP server = localhost
It wont work with my server name EIBERGEN01 or the IP adres = 192.168.3.5
Could someone explain to me why.

when using the code in asp.net and while clikcing Send button :
Err :The server rejected one or more recipient addresses. The server response was: 550 5.7.1 Unable to relay for nshanmugaraj@gmail.com
Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code.

Exception Details: System.Runtime.InteropServices.COMException: The server rejected one or more recipient addresses. The server response was: 550 5.7.1 Unable to relay for nshanmugaraj@gmail.com

Source Error:


Line 20:            mailObj.Body = MsgBody.Text
Line 21:            SmtpMail.SmtpServer = "localhost"
Line 22:            SmtpMail.Send(mailObj)
Line 23:            End Sub
Line 24:        </SCRIPT>


Source File: D:\ASPdotNET\Email\WebForm1.aspx    Line: 22



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I am new to asp.net .. can u kindly rectify my doubt..