my email code does not work with remote connection database

Please see the class Below. I used this class to send Emails from Gmail. Any how I cant see any connection issue with your Code. Please check the SQL Connection too. There may be firewall , Virus Guard blocks can be happen when sending using Email functions.

If you find any support from following code, plz marked as answered.

using System;
using System.Data;
using System.Configuration;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;
using System.Collections;
using System.Web.Mail;
using System.IO;

namespace TestEmail
{
public class cEmail{

#region "Variable and properties"
private string mstrFrom;
private string mstrTo;
private string mstrCC;
private string mstrBCC;
private string mstrSubject;
private string mstrBody;
private Int32 mintMailBodyFormat;
public ArrayList mailAttachment;
public string mailAttach1;
private MailMessage mobjMail;

private string mstrError;

public string SendFrom{
get{
return mstrFrom;
}
set{
mstrFrom = value;
}
}

public string SentTo{
get{
return mstrTo;
}
set{
mstrTo = value;
}
}

public string SendCC{
get{
return mstrCC;
}
set{
mstrCC = value;
}
}

public string SendBCC{
get{
return mstrBCC;
}
set{
mstrBCC = value;
}
}

public string SendSubject{
get{
return mstrSubject;
}
set{
mstrSubject = value;
}
}

public string SendBody{
get{
return mstrBody;
}
set{
mstrBody = value;
}
}

public Int32 MailBodyFormat{
get{
return mintMailBodyFormat;
}
set{
mintMailBodyFormat = value;
}
}

public string Errordes{
get{
return mstrError;
}
set{
mstrError = value;
}
}

#endregion

#region "Send Email"
public void SendEmail()
{
mobjMail = new MailMessage();
mobjMail.From = "ISO TestEmail System <testemail.chesalon.com>";
try
{
string SenderName = System.Configuration.ConfigurationManager.AppSettings["SMTP:Sender"].ToString();
string senderEmail = System.Configuration.ConfigurationManager.AppSettings["SMTP:From"].ToString();
mobjMail.From = SenderName + " <" + senderEmail + ">";
}
catch
{ }
mobjMail.To = mstrTo;
if (mstrCC != "") {
mobjMail.Cc = mstrCC;
}
if (mstrBCC != "") {
mobjMail.Bcc = mstrBCC;
}
mobjMail.Subject = mstrSubject;
mobjMail.BodyFormat = MailFormat.Html;


if (mailAttach1 != "" && mailAttach1 != null)
{
mobjMail.Attachments.Add(new MailAttachment(mailAttach1));
}
try
{
//adding username and password reading the system configuration file if exisits
SmtpMail.SmtpServer = System.Configuration.ConfigurationManager.AppSettings["SMTP:Server"].ToString();
if (System.Configuration.ConfigurationManager.AppSettings["SMTP:UseAuth"].ToString() == "1")
{
string email = System.Configuration.ConfigurationManager.AppSettings["SMTP:Email"].ToString();
string password = System.Configuration.ConfigurationManager.AppSettings["SMTP:Password"].ToString();
email = Encryption.DecryptSimple(email,"");
password = Encryption.DecryptSimple(password,"");
mobjMail.Fields.Add("http://schemas.microsoft.com/cdo/configuration/smtpauthenticate", 1);
mobjMail.Fields.Add("http://schemas.microsoft.com/cdo/configuration/sendusername", email);
mobjMail.Fields.Add("http://schemas.microsoft.com/cdo/configuration/sendpassword", password);
}

string ServerPort = System.Configuration.ConfigurationManager.AppSettings["SMTP:ServerPort"].ToString();
mobjMail.Fields.Add("http://schemas.microsoft.com/cdo/configuration/smtpserverport", ServerPort);

if (System.Configuration.ConfigurationManager.AppSettings["SMTP:UseSSL"].ToString() == "1")
{
mobjMail.Fields.Add("http://schemas.microsoft.com/cdo/configuration/smtpusessl", "true");
}
else
{
mobjMail.Fields.Add("http://schemas.microsoft.com/cdo/configuration/smtpusessl", "false");
}

string url = System.Configuration.ConfigurationManager.AppSettings["TestEmailFOLDER"].ToString();
mstrBody = mstrBody.Replace("\n", "
");
mobjMail.Body = PopulateBody(mstrSubject,mstrBody, url);
SmtpMail.Send(mobjMail);
}
catch(Exception ex){
Errordes = ex.Message;
}
finally{
mobjMail = null;
}
}

private string PopulateBody(string title,string description, string url)
{
string body = string.Empty;
using (StreamReader reader = new StreamReader(HttpContext.Current.Server.MapPath("~/EmailBody.htm")))
{
body = reader.ReadToEnd();
}
body = body.Replace("{Title}", title);
body = body.Replace("{Description}", description);
body = body.Replace("{URL}", url);
return body;
}

#endregion

}

}