Just to make sure I understand, you want to restrict sending/receiving email from a Blackberry device. Is that correct?
There are several things you can do. For instance, look at this link:http://btsc.webapps.blackberry.com/btsc/viewdocument.do?externalId=KB23877
Not exactly. Perhaps I was not too clear in my OP, so let me try to clarify.
I do not have a BB and nobody in my enterprise has one.
What we want to do is to prevent anyone from outside to communicate with us using a BB device
(external to the enterprise).
In other words, we want our internal messaging system to be able to detect when an incoming email has been sent from a BB device, block the email, and then send back an automated answer to the sender (the one who sent the email from his/her BB) explaining that, as per internal corporate policy, we do not accept email sent from a BB device and we invite the sender to send his email again, but this time from a non BB device.
In the same way, we would like to prevent our people to send emails which will be received on a BB device. This, however, might be more difficult to achieve as, from what I understand, there is nothing in an email address that would identify its owner to be a BB user.
Hope I was clearer this time.
Any idea ?