I have been unsuccessful in using XMOD 4.5 to send emails.  This led me to test out the portal's ability to send emails.  I have been successful at sending a test email from the Host/SMTP settings configuration.  However, I am getting the same CDO.Message error when trying to send from the Admin/Log Viewer panel.  The strange thing is, I have 2 other (separate) instances of DNN 3.2.2 installed on the same server.  Both of the other instances are able to send email from the log viewer.  Any suggestions?

Thanks.

AssemblyVersion: -1
Method:
FileName:
FileLineNumber: -1
FileColumnNumber: -1
PortalID: -1
PortalName:
UserID: -1
UserName:
ActiveTabID: -1
ActiveTabName:
AbsoluteURL:
AbsoluteURLReferrer:
ExceptionGUID:
DefaultDataProvider:
InnerException: Could not access 'CDO.Message' object.
Message: 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 (0x8004020E): The server rejected the sender address. The server response was: 501 <host>: sender address must contain a domain --- 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 DotNetNuke.Services.Mail.Mail.SendMail(String MailFrom, String MailTo, String Cc, String Bcc, MailPriority Priority, String Subject, MailFormat BodyFormat, Encoding BodyEncoding, String Body, String Attachment, String SMTPServer, String SMTPAuthentication, String SMTPUsername, String SMTPPassword)