Re: Epic: FROYO Security Time out change
 

Android 2.2 Email.apk - Bypassing Exchange security policy - APK Attached. - Page 11 - xda-developers

Scroll down to a post by josmo. He modified the Email.apk specifically for the Epic. I tested it and it works on the two exchange server accounts (forced pin) i have on my phone. I believe the email client has the same policies as in 2.1.

Note: it does require you to renter the accounts settings so have them handy. Also you have to go to security and manually disable the pin (no longer greyed out).