This thread is for discussions of SMTP Mailing Application.

This code works great on my development machine.

MailMessage myMail = new MailMessage();
myMail.From = "me@yahoo.com";
myMail.To = "hardware@yahoo.com";
myMail.Subject = EmpCurrent.WholeName + " Has sent Purchase
Requisition #" + lblReqNumber.Text + " to you for your review.";
myMail.Priority = MailPriority.Normal; myMail.BodyFormat = MailFormat.Html;
myMail.Body = "Please review and reject or approve as soon as possible.";
SmtpMail.Send(myMail);

But when I install it on a desktop, it gives the following message every time:
Any Ideas?

Here is the error message:


************** Exception Text **************
System.Web.HttpException: Could not create 'CDONTS.NewMail' object.
  at System.Web.Mail.LateBoundAccessHelper.get_LateBoundType()
  at System.Web.Mail.CdoNtsHelper.Send(MailMessage message)
  at System.Web.Mail.SmtpMail.Send(MailMessage message)
  at PerfectReqs.PerfectReq.MenuActionSubmitOnClick(Object sender,
EventArgs e)
  at System.Windows.Forms.MenuItem.OnClick(EventArgs e)
  at System.Windows.Forms.MenuItemData.Execute()
  at System.Windows.Forms.Command.Invoke()
  at System.Windows.Forms.Control.WmCommand(Message& m)
  at System.Windows.Forms.Control.WndProc(Message& m)
  at System.Windows.Forms.ScrollableControl.WndProc(Message& m)
  at System.Windows.Forms.ContainerControl.WndProc(Message& m)
  at System.Windows.Forms.Form.WndProc(Message& m)
  at System.Windows.Forms.ControlNativeWindow.OnMessage(Message& m)
  at System.Windows.Forms.ControlNativeWindow.WndProc(Message& m)
  at System.Windows.Forms.NativeWindow.Callback(IntPtr hWnd, Int32 msg,
IntPtr wparam, IntPtr lparam)

I think your desktop should also
have the CDO  dlls installed (registered).
If you don't want this route,  try to
create your own mail compnent.  I refer
you to search google for 'smtp mail component in c#'.

If SmtpServer property is not set, the name of the local SMTP server is used. Set SmtpServer property of the SmtpMail class (Assign IP address) to make it work over the internet.

Because, I am a Vietnanese, so my English quite poor.
I think that, when a source to send a message, we need a host mail to send, but in this source code, I can't see  about any host.
I tried to send a message, but I can't receive a message which I send.
Thank a lot.
Nguyet Anh.

Hello;

thank you for your work.
but when i tried to send an email there was an exciption that say (could not acess 'CDO.Message' object )
so what can i do??

thank you.

Younis Alomoush

Hi,

I have tried to send the email similar to what you have done, with the exception of specifying the SmtpMail.SmtpServer.

But when I try to send an email there is an exception that says (Could not create 'CDO.Message' object ) . Can you help me out with this?

thank you.

Swetha

This article is great!  I'm very impressed as a .NET newbie.

I send 3 messages to myself at interval of 5 minutes.  all three of them arrived about 45 minutes later.

How does the method work?  Does it queue up a certain number of message & send them at same time.  Is there a way to send the mail messages instantly?

puzzled!

Have you found any solution to this problem yet ? I am experiencing the same issue.

Hi guys,

I also have the same problem and REALLY don't know how to come over it. You may have found the solution for it yet I just got it. Could you guys help me too?

YOu may also contact me directly : mehrdada@shaw.ca
Thanks
Mehrdad

Hi Guys, can u help with some web sites that i can visit to learn more about .Net platform.

Cheers
TK

I know this makes little to no sense, but I too had the exact code working on a .Net app and it too studdenly stopped working.

One simple line fixed it, reasons unknown, just try this....

mail.Fields.Add("http://schemas.microsoft.com/cdo/configuration/smtpconnectiontimeout", 60)

The default value for smtp connection timeout is 30 seconds. I just beefed up that part.  I guess 30 seconds wasn't enough for all SMTP connection (incl. name resolution, user authentication, etc. ).

Hope this helps,
Brian
brian.pressman@iko.com

please can u let me know how to add filedialog1 component

System.Web.Mail.SmtpMail.SmtpServer = MailServer; // SMTP Server IP
MailMessage mailMessage = new MailMessage();
//Set the SMTP Authentication details

mailMessage.Fields.Add("http://schemas.microsoft.com/cdo/configuration/smtpa
uthenticate", "1");    //basic authentication

mailMessage.Fields.Add("http://schemas.microsoft.com/cdo/configuration/sendu
sername", MailUserID ); //set your username here

mailMessage.Fields.Add("http://schemas.microsoft.com/cdo/configuration/sendp
assword", MailPassword );    //set your password here

System.Web.Mail.SmtpMail.Send(mailMessage);

Nitin Chaudhary
Email: nitin_chaudhary@yahoo.com

I try to send an email in C#, it is working in .net installed system. But not working in system where .net is not installed. the exception says (Could not access 'CDO.Message' object ) . Please help me to clear this.

Thanks & Regards,

PremLatha.