Over the last several months we have been working with internal teams to migrate to a new email system for our technical security notifications. Today we ran in to an issue with the transition and will need to change the address the emails come from.
For reference, I am referring to the mailers you can sign up for at this page: http://technet.microsoft.com/en-us/security/dd252948.aspx
We highly recommend that users register for our comprehensive alerts if you have not done so already.
