Strange problem in sending emails by asp.net

I use the following code to send email, and strange thing that I received the message at hotmail mail, and failed to receive it at yahoo mail , can you help me and explain what this happen and how to overcome this.

Regards
Serag Farag
PrivateSub Button1_Click(ByVal senderAs System.Object,ByVal eAs System.EventArgs)Handles Button1.Click

Dim msgmailAs System.Web.Mail.MailMessage

Dim SmtpMailAs System.Web.Mail.SmtpMail

msgmail =New System.Web.Mail.MailMessage

' SmtpMail =

msgmail.To = "elomah@dotnet.itags.org.yahoo.com"

msgmail.Cc = "ahmed_serageldin@dotnet.itags.org.hotmail.com"

msgmail.From = "ahmed_serageldin@dotnet.itags.org.hotmail.com"

msgmail.Subject = "subject of ggggggggggggggmsg"

msgmail.BodyFormat = System.Web.Mail.MailFormat.Html

msgmail.Body = " what u send mail ofgh ghgf ghr msgs"

SmtpMail.SmtpServer = "serag-0ivd22eow"

smtpmail.send(msgmail)

Response.Write("msg recived")

EndSub

Hello Serag and welcome to the forums.
First of all, if your email is received by Hotmail, then I don't thinkthere is a problem with your code. Maybe some wrong happened on its wayto Yahoo. Try to upload your script to a live server and then send theemail again.
Regards,


i saw the same problem in a diffirent thread i will check if i can find it for you but any way try what bilal suggest

try one of those links it might helps
http://forums.asp.net/916696/ShowPost.aspx
http://forums.asp.net/ShowPost.aspx?PageIndex=2&PostID=719622#719622
http://forums.asp.net/846879/ShowPost.aspx
and let me know if you solve it
good luck !!!