VMware vSphere Data Protection 5.1 has an integrated email notification system which, once configured, may send server error and status messages to a server that is accessible to EMC, the parent company of VMware and collaborator on VDP 5.1. Some customers may consider this information to be sensitive.
All messages received have been disposed of. Future messages received from this notification system will be immediately deleted.
This KB provides a script to disable the notification function. Customers are requested to follow the steps outlined in the KB.

October 2, 2012 Update
VMware has released a new version of vSphere Data Protection 5.1 in which the notification function is permanently disabled. Customers should upgrade to this version immediately, see the KB for details.