it is happening all the time in my cp, when i m sending the adena share of w/e we do. i send the mail with adena, they open it, but it is coming back to me. so i have to send the money again. second time they are able to receive their mails without any problem. note: their mailboxes of send/receive mails are not full. please if it is possible, check it. it is really annoying.