homer
Member

Registered: Jan 2000
Location: Twin Cities, MN
Posts: 1683 |
When email protocols were first established, security was not on the priority list. It's fairly easy for a spammer to fake most of the headers. That said, a full header does contain a path that is rather difficult (but not impossible) to fake, so you can, with some digging, figure out where it came from, or, at the very least, figure out the open relay that the spammer is using.
Unfortunately, most open relays are overseas on servers no one cares about, so it's tough to shut those doors.
If you have access to your mail server, you can set up Procmail filters that filter spam at the server level. This takes a bit of work, though.
Bottom line is that there is no way to stop spam short of bugging your legistlatures to do something about it.
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