Here's some educated guesses.
Services that appear under
IT Policy are security services which may or may not be associated with IT Policy. I'm on a BES which does push down IT Policy (password required), and I have the Desktop[S113631](DES)
service under IT Policy.
If you highlight the service listed under IT Policy and click the wheel, the menu option Regenerate Encryption Key
appears. This is the encryption key used to encode/decode traffic between your BlackBerry and the BES. Don't know if it's used for BIS email, or even if it appears in a BIS only environment.
As for your bbCorrector problem:
- Make sure you have the latest version - under Options --> Advanced Options --> Applications, it should be version 1.2.2. (use the "(4.0.2+ Handheld Software)" link at bbCorrector)
- Try changing the "Disable MDS Proxy" setting in the app's settings
- Try playing with your TCP/APN settings. Check this link for info:
[User] HOWTO: Use BlackBerry As Modem For Laptop!