When you add an Exchange account using ActiveSync on an Android phone, some phones will begin forwarding a copy of every SMS message (e.g., text message) that the phone receives to your email account. This feature will vary from phone to phone.

To disable this feature:

1. On the phone, open the Email application.
2. Tap Settings, then tap Microsoft Exchange ActiveSync in the Accounts group.
3. Next, tap Settings under Common settings group, then tap your email address.
4. Scroll down and under the Server settings group, uncheck Sync SMS.