We have added a custom dsn and linked this DSN to a transportrule.
The message received by the user in outlook 2010 looks like this :
Your message did not reach some or all of the intended recipients.
Sent: 21/10/2014 14:08
The following recipient(s) cannot be reached:
Co on 21/10/2014 14:08
Diagnostic code = SecureMessagingError; Reason code = TransferFailed; Status code = 570
< #5.7.778 smtp;550 5.7.778 TRANSPORT.RULES.RejectMess
age; the message was rejected by organization policy>
In owa the message looks better (html) with the user information section and administrator section.(http://technet.microsoft.com/en-us/library/bb232118(v=exchg.150).aspx
The strange thing is that within the same oulook client I open as a additional mailbox the Exchange system mailbox where all copies of DSN are received and there is renders as expected !
The difference is that the client mailbox is a 2013 mailbox and that the exchange system mailbox is still in Exchange 2007 (not migrated yet).
I've also noticed that their is no attachment in the 'bad' e-mail but that it is bigger !? (23 kb)
The attachment wasn't replaced by a .txt (scanmail)
Good mail :
Received: from XXX.int (Exchange 2013) by YYY.int (Exchange 2007) with Microsoft SMTP Server (TLS) id
8.3.297.1; Tue, 21 Oct 2014 14:07:53 +0200
Bad mail :
Received: from ZZZ.int (Exchange 2013) by ZZZ.int (Exchange 2013) with Microsoft SMTP Server (TLS) id
15.0.847.32 via Mailbox Transport; Tue, 21 Oct 2014 13:44:57 +0200
Please advise !