I hope I am posting this in the correct section.

I have a customer with an SBS box running Blackberry Express. They have a user that is reciving emails every half an hour:

Subject: Delivery Delayed: RIM_bca28a80-e9c0-11d1-87fe-00600811c6a2

Delivery is delayed to these recipients or distribution lists:

etp email addres at blackberry dot net (edited to allow me to post)

Subject: RIM_bca28a80-e9c0-11d1-87fe-00600811c6a2
This message has not yet been delivered. Microsoft Exchange will continue to try delivering the message on your behalf.


When looking on the servers event logs, there is a corrosponding entry every 30 mins:

(email address) Invalid ETP stream - size=97, transaction=1078076303, tag=-401548857, content type=CMIME, cmd=0xfd, relay=etp email addres at blackberry dot net (edited to allow me to post)

I have been trolling forums with no success. If anyone could give me any ideas I would be grateful.

This needs to be in the BES Admin Corner.