Getting this message when trying to send email, have tried 1, 2, or 20 recipients and still wont go thru. Message reads: "Mail could not be sent using the account XXX XXXX" "Mail error, the server did not understand the request." Some emails go thru fine, most don't and I get this message. Another co-worker is getting this message as well, but not all the time. 2 others don't see error at all. And ideas will help!