Empty e-mail headers and "from" fields

[motco]

I'm getting loads of e-mails with no subject line and no "from" entry. I assume these are avoiding anti-spam measures but how do you send an e-mail with no "from" entry?

I also got a message from Amazon today about a non-delivery - failure. I haven't ordered from Amazon for a while so I assume it's spam so have dumped it. They're getting craftier by the day.

[stuuu]

The 'Mail From' field is easily modified it is actually designed that way, if you go into the e-mail header you may be able to find out who sent it, but even that can be tampered with.

Loads of reading on this page if you are interested

[url]www.rahul.net/falk/index.html#howtos[/url]

[Plotloss]

If you send mail through SMTP you can send it with any from address you like, even a blank one...

[wiggy001]

My Yahoo account that I use for registrations etc gets a lot of mails with no "from", no "subject" and no body text either!

What's that all about then? Spam selling invisible ink from the invisible man?