i changed the encryption on the BBE and nowmy users cannot send emails?

any ideas?

You'll probably need to reactivate every one of them.

"Warnings:Changing encryption algorithms stops basic operation of the BlackBerry device. Reconnect the BlackBerry device or perform a wireless enterprise activation to send and receive messages on the BlackBerry device again. "

Again, as a new BES admin, you really need to familiarize yourself with BES and how it works.
Please read RIM administration documentation for your version of BES.
You have a lot of power in your hands, and without the proper knowledge, you can easily make life very difficult for your end users.

Ok cool, thanks...

Thats why i have a lil test envoroment set up! Yeah its been a LONG time since i last admin'ed a BBE server.

i think it was 3.7.xxx last time i admin'ed a BE server

If you change the encryption method from the default 3DES to AES the users should just need to regenerate the encryption keys again.

That wouldn't be good business for RIM to force all users to reactivate all the users.

What you can do in the future is set the BES to use both 3DES and AES and when the BES requests the devices to regenerate their keys they will switch unknowingly to the users without any downtime.

After 30 days switch the BES to use AES only as by the users should all be using AES.

That's the best method I can think of to use.

Hope that helps.

how do you regenerate encryption keys?

On the BB, go to (Settings/Tools) Options --> Security Options --> General Settings, scroll down to Desktop[...](3DES) under Services:, click the wheel and select Regenerate Encryption Key.

Answer ^^ stolen from Regenerate Encryption Key

Always search first...