Hello there,
I have been working with BlackBerry for over 4 years and if you need BB help you should subscribe to RimRoad.com at this link:
It's the most valuable forumn out there for BlackBerry questions.
Now, regarding your problem: There could be many reasons the user can't send from the device. The first test is to see if one of the other methods of communications are available. For instance PIN to PIN messaging.
What BlackBerry is the user using? If it's a next gen device (phone integrated) then can the user make phone calls?
If they are able to send PIN to PIN and make phone calls, then next check is to open the message with the X on it (the one that wouldn't send) and check to see what the status is. If the status is Pending and they are in a signaled area, they should reboot the device by using Alt-Cap-Del keys similiar to ctrl-alt-del on a real computer.
After the device comes back up, they can click on the message and select "Resend" from the pull down menu. If it doesn't resend then...
The next step is to verify that the device sees the BES. To do this, go to options and then message services. There should be at least the following message service: Desktop
Escape from there and open service books. You should see at least:
cical
alp
ippp
cmime
If you click and select "view" from the cmime, under UID it will list your BES SRP number. Verify this matches.
Then, on the users desktop, open up the desktop redirector. Verify that the BES name is listed under status and has running next to it. This will verify that the user is using the BES and NOT the desktop redirector. Also, it does NOT matter if the user has the desktop redirector running at the same time. The users mail is being captured by the BES before the desktop redirector gets it and therefore it doesn't matter. And, NO it does not have to be left on in addition to the BES. Does this make sense?
Now that you have checked all of this, and you still can't send emails...what's next?
Well, there could be an outage in your area. If your device is a next gen device you have to call the service provider (ie. tmo, att, verizon, nextel) or if it's a legecy device, you can check BB's website at:
Reloading the software does NOT fix this type of problem.
Good luck.