Mail not going from webserver but works perfectly fine on local host

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Hi,
I have written a code for sending mail. It works perfectly fine on my local host but when I uploaded it and run on my web server its not working. Please Help me ASAP. I have to give the code to the client ASAP.
Here go's the code

C#

protected void addtocart_Click1(object sender, EventArgs e)
    {
        try
        {
	CdataTable = ObjBussiness.login_validate(Session["userid"].ToString(), Session["status"].ToString(), 17, source).Tables[0];
                for (int i = 0; i < CdataTable.Rows.Count; i++)
                {
                    listemailids += CdataTable.Rows[i]["address"].ToString() + ",";
                    /////msg1.To.Add(CDataTable.Rows[i]["address"].ToString());
                }

                string ToAddress = listemailids.Remove(listemailids.Length - 1);
                MailMessage mm = new MailMessage("info@peppermintdemo.com", ToAddress);
                mm.Subject = "Order Cart";
                mm.Body = mailbody.ToString();
                mm.IsBodyHtml = true;

                SmtpClient smtp = new SmtpClient();
                smtp.Host = "127.0.0.1";

                smtp.Send(mm);

                
                Session["productid"] = "";
                Session["qty"] = "";
                Response.Redirect("thankyou.aspx");
            }
        }
        catch (System.Data.SqlClient.SqlException ex_msg)
        {
            string msg = "Error occured while login.";
            msg += ex_msg.Message;
            //throw new Exception(msg);
            Label1.Visible = true;
            Label1.Text = msg;
        }
        finally
        {

        }
    }

Posted 21-Apr-11 19:25pm

ubaidh sayed

Updated 21-Apr-11 20:04pm

Sandeep Mewara

v2

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Comments

nit_singh 22-Apr-11 1:29am

If you can tell us what problem you are getting on your web server, then it will be easy to understand the problem. Another thing add another generic catch block, so that it will handle all the exception not of a particular type.

ubaidh sayed 22-Apr-11 3:03am

Thanks nit_singh.
Its resolved.

3 solutions

Solution 3

Thanks digital man &amp; Sandeep Mewara.
That worked for me :-)
Thanks a million for your time.

Posted 21-Apr-11 21:01pm

ubaidh sayed

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Sandeep Mewara · Accepted Answer · 2011-04-21T20:07:00

As already pointed out, I see you are using 'Host = "127.0.0.1";' which is a localhost ip. This might not work on webserver. You need to have proper smtp server name to communicate.

Further, it can be because of other various reasons. Like: Is the port open? Firewall permissions in place?

I would suggest you to configure SMTP configuration in Web.Config:

<system.net>
   <mailSettings>
     <smtp from="abc@somedomain.com">
       <network host="somesmtpserver" port="25" userName="name" password="pass" defaultCredentials="true" />
     </smtp>
   </mailSettings>
</system.net>

**R. Giskard Reventlov** · Accepted Answer · 2011-04-21T19:44:00

Solution 1

My guess is that smtp.Host is incorrect. Your web provider should be able to give you the correct address; usually something like mailhost.provider.com or similar.

Posted 21-Apr-11 19:44pm

R. Giskard Reventlov