Exchange EWS Managed API - Undelivarable mail notification does not have the DateTimeReceived property

When finding items from a Exchange 2010 Server journaling inbox, there are some notifications on undelivered mails.

When processing these emails and trying to read the DateTimeReceived property, I get an ServiceObjectPropertyException with the error:

You must load or assign this property before you can read its value.

Is there a way of identifying such emails, or loading the DateTimeReceived property (even it will be null)?

My Code is something like this:

FindItemsResults<Item> mails = folder.FindItems(searchConditions, countConstraint);
foreach (Item item in mails)
{
  EmailMessage email = (EmailMessage)item;
  email.Load();
  DateTime receivedTime = email.DateTimeReceived;
  ....
}

Those emails are from a journaling mailbox that has a copy of monitored mailbox every email sent to it.

The 开发者_如何学Cspecific emails that do not have this property, are notifications about emails sent from one of those mailboxes, but could not be delivered.

Through MFCMapi I was able to view the message, and the PR_MESSAGE_DELIVERY_TIME property is set.

I don't think DateTimeReceived is considered a first class property so you need to load your email with specific properties.

email.Load(new PropertySet(ItemSchema.DateTimeReceived));

try ((MailItem)item).DateTimeReceived - for reference see

• http://gsexdev.blogspot.com/2011/08/using-allitems-search-folder-from.html
• http://social.technet.microsoft.com/Forums/en-US/exchangesvrdevelopment/thread/8c71ace4-43d2-4ba2-88f2-16376dad828f
• http://msdn.microsoft.com/en-us/library/microsoft.exchange.data.transport.mailitem.datetimereceived%28v=EXCHG.80%29.aspx