Re: [Serusers] Checking spoofed From headers

Is there a way anyone can readily think of to check to see if someone using our open proxy is calling through with a From header that attempts to fool the recipient into thinking the call is validly from one of our users? Scenario is this... While looking at the logs this morning, I noticed someone was calling a SIPPhone user through our proxy with a From: address that LOOKED like it was a user of ours, but using a username that doesn't actually exist. I'm wondering if there's anyway to check if someone is calling through us with a From: address that looks like one of our users, but isn't. N. _______________________________________________ Serusers mailing list serusers(a)lists.iptel.org http://lists.iptel.org/mailman/listinfo/serusers