Has anyone seen a problem with the properties of sent items incorrectly reporting "Transfer Failed" for all recipients when only one of the recipients actually had the transfer fail?

On our system we have our contacts setup in an external domain. When I send a message to a group which includes a bunch of these contacts and any one of them get a transfer failed, they are all marked with a Transfer Failed in the sent item properties. I have reviewed the GWIA log and see all of the messages transfer except for the one that really had an issue. I have also spoken one of the recipients who confirmed that he did get the message with no problem.

Another interesting note about this is if there are recipients in the group that are from different external domain, they report Transferred just fine.

Thanks for any help or info on this.