Problem with the 8330 with Nextel service (formally sprint)
 

Hello,

I am a System Admin that manages the BES at our office and I am having an issue with 2 users that I can't seem to fix. The environment is synchronized with Exchange 2003. For some reason these users can't reply to email from their BB; they receive a red "X" when they try to. I have wiped the handheld, deleted/re-added the BB acount each time I have tried the following; deleted the CMIME service book and re-added that hasn't worked, also removed users from all groups in Active Directory as it seems to be an issue with their AD account;that didn't work as well. When I copy the users account in Active Directory that resolves the issue. I have 10 users on the BES and only these 2 don't work.

What is the Message Status for those messages that receive the red X (open message, scroll up into the header field)?

Welcome to the forums.

When you get the red X, open the message, what does it show next to status? Also, can they compose a new email or is it only an issue with replying?

I use GroupWise, not Exchange, but this may be of some help...
BlackBerry - Send As Issue