See Why Postini Marked Your Message as SPAM
Ever wondered why Postini blocked your email? Luckily Postni provides their “Postini Message Analysis” tool to assist in tracking down pesky false positives.
Here’s how to run your message through their analysis tool:
Login to Google Postini’s web interface at https://login.postini.com/ and release your quarantined message.
Open your message in your favorite email client. View your message headers and copy everything from the top down to (and including) the line starting with “X-pstn-addresses:”
Visit the Postini Message Analysis Tool page and paste in the content we copied in Step Two. Press “Analyze Message”
Review your results and see why the message was counted as SPAM.
Another helpful page is Google’s description for what each custom header tag (added by Postini) represents. See this page for more information.