Iis Smtp Server Problem

[itssankar]

i am using visual studio 2003 and iis (win 2k). But i am having some problem with virtual smtp server so i am not able to send mails using smtpmail from asp.net. so plz tell me how to configure that or is there any solutions. while sending mail i am getting badmail in my mailroot.

[IanTurner]

What errors are being shown in the badmail folder?

[itssankar]

I am getting the following error in the bad mail folder.

Unable to deliver this message because the follow error was encountered: "This message is a delivery status notification that cannot be delivered.".

The specific error code was 0xC00402C7.

The message sender was <>.

The message was intended for the following recipients.
[e-mail]

[itssankar]

I have tried to send mails to hotmail ID and yahoo id. but the problem only with the rediffmail id. i can send smtp mail to rediffmail id from another system. then what may be the problem? plz help me..

[IanTurner]

Is it a consistent error on this mail address, if so it may be that their mail server is blocking your mail server for some reason. Usually this is because you are on an open relay or Spam blacklist.

[itssankar]

i have tried with several rediff id but the mail is not sending to rediff id but i can send mail to all these rediff id when i am running the program in another system. plz help me.