yllus
Elite Member & Lifer
- Aug 20, 2000
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Originally posted by: Gamingphreek
You don't. If you could rely on e-mail relays to require accurate headers it would be possible, but that isn't the case. The college you think it's coming from is probably just a compromised machine acting as the starting relay for the message to be sent from somewhere else.
There's nothing you can do. If there was something that could be done, it would have been done already - spam is a costly fact of life for businesses. At last count, my company has 21 machines dedicated to the sole task of acting as e-mail relays because of how CPU intensive the anti-virus and and spam detection software is. Reactive measures is all that we can do.
So since there is a relay machine (probably 1 out of many) what prevents them from tracking the relay machines and hopping from machine to machine. For instance, since this is at this University, could someone not find the connection that is used to make the relay and trace that to the next point? If that makes any sense...
-Kevin
You absolutely could. And then that IP either leads to a Comcast IP address for a residential machine that's been compromised and is sending those messages on command, or you get the guy's actual IP in China or Nigeria or whatever.
Problem is, there are so many of these messages coming from so many IPs, with an almost always understaffed and overworked IT department that an investigation never really begins. In the short term it costs less to add another machine to your e-mail relay cluster instead of taking time away from your skilled help to deal with every spam message you receive.
The best case you can hope for is that sysadmins treat this as a wakeup call and negotiate with management to get the time and budget to update their relays to require proper authentication. And that someone contacts Comcast to tell them one of their subscribers has an infected machine. But that's pretty rare (though getting less rare lately).