Mail Not sent to Distribution List Mail ID in asp.net 3.5

Hi EveryBody!

Here i display my Code . And Waiting for ur  Quick Reply....! Pls help Me

using System.Web.Mail;
public void SendEmail(string strQry, string StackTrace)
        {
            string Toid = string.Empty;
            string strCompanyCode = HttpContext.Current.Session["Comp_Code"].ToString();
            string strUserCode = HttpContext.Current.Session["User_Code"].ToString();
            string strURL = HttpContext.Current.Request.Url.AbsoluteUri;
            string strCurrentTime = DateTime.Now.ToString();
            string strSubjectNew = "Dear SwaaS Dev Team ,

New Bug has been Raised

URL :" + strURL + "

Company Code : " + strCompanyCode + "

User Code : " + strUserCode + "

Time: " + strCurrentTime + "

Query: " + strQry + "

Exception Message: " + StackTrace + "
";
            string server = ConfigurationSettings.AppSettings["SMTPSERVER"];
            string frommail = ConfigurationSettings.AppSettings["FROMMAIL"];
            string toMail = ConfigurationSettings.AppSettings["TOMAIL"];


            if (string.IsNullOrEmpty(toMail))
            {
                toMail = "[email protected]";
            }
            System.Web.Mail.MailMessage msgmail = new System.Web.Mail.MailMessage();
            MailMessage msgMail = new MailMessage();
            msgMail.To = Toid;
            msgMail.From = frommail;
            msgMail.To = toMail;
            msgMail.Subject = "Query Exception : Company Code : '" + strCompanyCode + "' , User Code : '" + strUserCode + "'";
            msgMail.BodyFormat = MailFormat.Html;
            msgMail.Body = strSubjectNew;
            if (server != "")
            {
               System.Web.Mail.SmtpMail.SmtpServer = server;
            }
            try
            {
                System.Web.Mail.SmtpMail.Send(msgMail);
            }
            catch (Exception ex)
            {
                throw (ex);
            }