email headers
No, You Don’t Have a Fax. An Analysis of a Spam Email
A fake fax notice landed in my inbox and turned out to be a perfect teaching tool. I’ll walk you through the clues that gave it away, from the sender’s address to the hidden headers, and show you how AI is about to make spotting spam much harder.
How Do Spam Filters Work?
Spam filters can be sophisticated or simple. I’ll look at some of the characteristics of email that spam filters check.
How Do I Tell Someone They’ve Entered the Wrong Email Address?
Many websites ask you type your email address in twice because it’s so easy to make a typo and bring communication to a screeching halt.
How Do I View the BCC Recipients on an Email I’ve Received?
BCC is a way to send copies of email without all recipients being visible. But can you still view the BCC’ed?
How Do I Tell Who Sent an Email?
It’s extremely unlikely. I’ll walk you through why that is and one way you might get lucky.
Why Does Email Bounce?
Email can bounce for many reasons. I’ll look at several of the most common email bounce messages and try to interpret what they really mean.
Why Do I Get Spam Not Addressed to Me?
Getting spam that isn’t addressed to you isn’t a mistake. Spammers use a simple email feature to hide who else they’re sending it to. I’ll describe how it works, why it still reaches you, and what to do about it.
How Do I Find the IP Address of an Email’s Sender?
Determining the IP address of an email sender is difficult at best, and usually impossible. Sometimes you get lucky.
Why Is an Email Address Sometimes in Angle Brackets?
Computers use email addresses to route email. Angle brackets are used when a more human-readable name is also included.
I got two identical spam messages from two friends. Which of us has been hacked?
It’s unlikely that you’ve been hacked. It’s possible that your friends have both been hacked, but this kind of thing can happen without anyone being hacked at all!
How can I prove that I didn’t send a particular email?
So much information in email can be spoofed that it’s difficult to prove where an email came from unless you look at the headers.
Why is email I’m sending being received by someone I’m not sending to?
This is a frustrating situation that happens regularly to businesses running email lists. More than likely someone on your list is automatically forwarding. There is one way you may be able to track down the source.
