Re: SmtpMail.Send - Exception: "Could not access 'CDO.Message' object"
From: bb (bb.a_at_t.osix.net)
Date: 07/07/04
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Date: Wed, 07 Jul 2004 12:57:10 +0100
Jens wrote:
> Hi
> I am writing a ASP.NET web application that must sent some e-mails.
>
> I get the exception “Could not access 'CDO.Message' object” when I call SmtpMail.Send. This only happens when I send e-mail addresses out side my company walls. When the e-mail is send on some one in my company it works perfect.
>
> I think it is a relay issue. Our system administrator will not allow relaying.
>
> In the ASP.Net web.config file I let the web application impersonate a specific user that has a mail account on our mail server:
>
> <identity impersonate="true" userName="MyDon\MyUserName" password="zzzz" />
>
> The web server and the mail server are two different physical computers.
>
> I have two questions:
> 1) How can I fix the problem?
> 2) Is it a relay issue? If yes, what can I do to fix it? Is it OK to allow relaying on a mail server?
>
> Below you can se my code and the exceptions
>
> Regards
> Jens
>
> Here you can see my code
>
> Try
>
> Mail.From = tbFrom.Text
> Mail.To = tbTo.Text
> Mail.Subject = tbSubject.Text
> Mail.Body = tbMessage.Text
>
> Dim SmtpMail As Mail.SmtpMail
> SmtpMail.SmtpServer = "MyMailServerName"
> SmtpMail.Send(Mail)
>
> Catch ex As Exception
>
> While (Not ex.InnerException Is Nothing)
> Response.Write( _
> "<b>Message:</b> " & ex.Message & "<br>" & _
> "<b>Source:</b> " & ex.Source & "<br>" & _
> "<b>StackTrace:</b> " & ex.StackTrace & "<br>" & _
> "<b>HelpLink:</b> " & ex.HelpLink & "<br>" & _
> "<b>UserName:</b> " & User.Identity.Name & "<br><br>")
> ex = ex.InnerException
> End While
> End Try
>
> Message: Could not access 'CDO.Message' object.
> Source: System.Web
> StackTrace: at System.Web.Mail.LateBoundAccessHelper.CallMethod(Object obj, String methodName, Object[] args) at System.Web.Mail.CdoSysHelper.Send(MailMessage message) at System.Web.Mail.SmtpMail.Send(MailMessage message) at NCR2.SendMail.btSend_Click(Object sender, EventArgs e) in C:\Inetpub\wwwroot\NCR2\SendMail.aspx.vb:line 79
>
> Message: Exception has been thrown by the target of an invocation.
> Source: mscorlib
> StackTrace: at System.RuntimeType.InvokeDispMethod(String name, BindingFlags invokeAttr, Object target, Object[] args, Boolean[] byrefModifiers, Int32 culture, String[] namedParameters) at System.RuntimeType.InvokeMember(String name, BindingFlags invokeAttr, Binder binder, Object target, Object[] args, ParameterModifier[] modifiers, CultureInfo culture, String[] namedParameters) at System.Web.Mail.LateBoundAccessHelper.CallMethod(Object obj, String methodName, Object[] args)
>
I used to get that message and wonder why the hell emails failed..
do this, to get the real error message of why the mail wasnt sent like
this ...
catch(Exception e)
{
e = e.GetBaseException();
log.Error("Error sending email via Server - + e.Message);
}
I now use both OpenSmtp and System.Web.Mail support in our applications
so that it can be configured on site. We find that the OpenSmtp library
provides much clearer diagnostics than CDONTS
Of course, this wont solve your problem, but may get you a meaningfull
error message ;-)
bb
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