If you're like most people, you've received many suspicious emails in your life. There are obvious ones, like: "Looking for a partnership in business" from a Nigerian government official. Yeah, right.
Other spam or phishing emails are tougher to spot. How about, "Congratulations, you're a winner" or "Join millions of Americans?" If you've been a Komando.com reader for a while, you wouldn't open these emails, or click on links or attachments, which would likely infect your computer with malware.
But, before you report these emails as junk or a phishing scam to your email provider, you may want to find out where the email originated, to see if it's OK or suspicious. To do that requires a little bit of work, but there's a site called MXToolbox that can help.
Note: Many email services like Gmail and Outlook do a good job of junking suspicious emails before they get to you. Still, some get through.
If a suspicious email makes it through to you, you want to find its source in your email headers. It's easy to find email headers, if you know where to look.