On Fri, 26 Sep 2003, Maxim K. wrote:Actually:
On Fri, 26 Sep 2003, Nadav Har'El wrote:
maybe "Welcome to Life?" :
I don't understand what is the problem making this with a regular mail.
you can always write the source address whatever you want,
but the stamps will discover which post office really sent the letter.
this is a problem of mailing system.
It does. Look at the "Received:" headers. They list the source IP and the IPs of all the mail servers your message went through.
Alon
1. It's possible to add fake "Received" lines so if someone tries to trace them they might "pass by" your machine move on to the faked servers and think your machine just forwarded the message.
2. Last week I was blamed by my ISP that I'm trying to send spam because apparently my Debian had a world-accessible Apache mod_proxy (he wasn't aware of that, I found the evidance in my apache logs), which was used by spammers to "bounce" SMTP over HTTP proxy (anyone know the exact HTTP stream they might have used for that?), if this succeeds then it looks like the spam was originated from the proxy machine.
Conclusion (also mentioned in the mod_proxy docs): DONT ALLOW WORLD ACCESS TO YOUR PROXY SERVER.
(I don't recall touching mod_proxy, can anyone show me what a virgin apache config file looks like?)
--Amos
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