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Please help - System.Web.Mail cannot access CDO.Message - HTTPException?

Posted on 2004-08-03
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Last Modified: 2008-02-01
There was a problem faxing.  Details:  System.Web.HttpException: Could not access 'CDO.Message' object. ---> System.Reflection.TargetInvocationException: Exception has been thrown by the target of an invocation. ---> System.Runtime.InteropServices.COMException (0x80040220): The "SendUsing" configuration value is invalid.

   --- End of inner exception stack trace ---
   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)
   --- End of inner exception stack trace ---
   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 BuyersFund.NEOMail.NEOMail.SendFax()



I do not know how to fix this.
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Question by:Tom Knowlton
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7 Comments
 
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nauman_ahmed earned 500 total points
ID: 11705497
You have to specify a server that will be used to send the message:

SmtpMail.SmtpServer = "localhost";

have a look at the following:

http://www.experts-exchange.com/Web/Web_Languages/ASP/Q_20695647.html?query=+Could+not+access+%27CDO.Message%27+object.&clearTAFilter=true

Best, Nauman

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LVL 25

Expert Comment

by:nauman_ahmed
ID: 11705510
Also dont forget to grant the Relay option for your SMTP server to allow relay from 127.0.0.1 n SMTP Server Properties ->Access -> Relay

-Nauman
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Author Comment

by:Tom Knowlton
ID: 11705549
How can I find out the name of my SMTP server if I don't already know it?
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LVL 5

Author Comment

by:Tom Knowlton
ID: 11705624
I set my SMTP server to "localhost".

Now I get a new error message:


There was a problem faxing.  Details:  System.Reflection.TargetInvocationException: Exception has been thrown by the target of an invocation. ---> System.Runtime.InteropServices.COMException (0x80029C4A): Error loading type library/DLL.
   --- End of inner exception stack trace ---
   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.CdoSysHelper.Send(MailMessage message)
   at System.Web.Mail.SmtpMail.Send(MailMessage message)
   at BuyersFund.NEOMail.NEOMail.SendFax()
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LVL 25

Expert Comment

by:nauman_ahmed
ID: 11706023
Which OS are you using? Win2K or Windows XP? If Windows XP, then you might not have CDONTS.dll that is required in messaging. Grab this dll from any Win2K PC and register it using regsvr32 CDONTS.dll.

Best, Nauman
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LVL 25

Expert Comment

by:nauman_ahmed
ID: 11706042
1. Copy CDONTS.dll to System32 dir.

2. Start -> Run -> cmd

type: regsvr32 c:\winnt\System32\CDONTS.dll

-Nauman
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LVL 5

Author Comment

by:Tom Knowlton
ID: 11706064
The Network Admin just recommended I  use "Local System" versus logging in  (under the Windows Service I am running).

This seems to have cleared-up the error messages as far as e-mail goes....but now I get another message (which I will post seperately).

Thanks,

Tom
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