This email with the subject "[Bulk?]QuickBooks Update: Urgent" was received in one of Scamdex's honeypot email accounts on Mon, 31 Oct 2011 03:42:59 -0700 and has been classified as a Generic Scam.
The sender was email@example.com, although it may have been spoofed.
You will not be able to access your Intuit QuickBooks account without Intuit Security Tool (IST™) after 31th of October, 2011.
You can download Intuit Security Tool here.
After a successful download please run the setup for an automatic installation, then login to Intuit Quickbooks online to check that it is working properly.