Posted September 30, 200816 yr I have discovered that Read Receipt feature in Outlook 2007 contain security hole that doesn't appear to be fixed or even described. In "Options\E-mail Options\Tracking Options" I've feature named Read Receipt set to "Never send a response". Recently I received a few messages with titles "Undeliverable mail: Read: ....". After inspecting this mail messages I've found that their mime-headers is OK and it looks like Outlook sent mail messages (without any notifications) titled "Read: ..." to a few SPAM messages in my inbox (IMAP4 account). Of course these spam-messages have Read Receipt option set. I've made simple test to determine is that really bug by undeleting spam-messages in my inbox (stroked through), marking them unread and finally deleting without reading it. Read receipts have arrived. I think this is a huge security hole in Outlook 2007 because people sending spam could find out who've active e-mail addresses. -- Have a nice day!
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