Hello,
I am using smtp email in asp.net.

following is the code

        Dim obj As System.Web.Mail.SmtpMail
        Dim MailReportAttachment As System.Web.Mail.MailAttachment
        Dim Mailmsg As New System.Web.Mail.MailMessage

        Dim vSmtpServer As String = ConfigurationSettings.AppSettings("EmailServer")

        Try
            obj.SmtpServer = vSmtpServer
            Mailmsg.To = vMailMsgto
            Mailmsg.Cc = vMailMsgCC
            Mailmsg.From = "\" & vFromDisplayName & "\ <" & vFromMsg & ">"
            Mailmsg.BodyFormat = Mail.MailFormat.Text
            Mailmsg.Subject = vSubject
            Mailmsg.Body = vMsgBody
            obj.Send(Mailmsg)
        Catch ex As Exception
            Throw ex
        End Try

here i am passing valid From , To , CC addresses also i am passing proper SMTP address. I am passing string to CC address sepearated by semicolon (;). but email does not go to all people. some people receives it and some does not. This is working fine in some cases but does not work properly in some cases. It does not even throw error message.

Can anyone please help me?

Thanks

Could their spam filters be stopping the emails?