Search TechNet for ResolveP2, you can prevent headers received via the IMS from resolving to a GAL entry.
Chris -- Chris Scharff Senior Sales Engineer MessageOne If you can't measure, you can't manage! > -----Original Message----- > From: Bourque Daniel [mailto:[EMAIL PROTECTED]] > Sent: Friday, January 18, 2002 4:38 PM > To: Exchange Discussions > Subject: e-mail anti-spoofing > > > > Ok, I just had to work on an e-mail message received by one > of our customer. The e-mail From address was from our company > and the customer was really on the impression that we were the sender. > > Since I know that a from address mean nothing and can be > spoof by anybody, looking at the smtp header, I was able to > track back the msg to an anonymiser site and the case was close... > > Doing some tests, I have also realise that we could be the > target of the same type of spoofing but this time, if the > from address is a valid internal smtp address, the from > address will be convert by Exchange to the internal version > and the user will think that the message come from the inside... > > Now, the V-P is receiving an e-mail from what he think his my > boss and all Hell break loose... > > > So, here is my question: > > Is there a setting in Exchange 5.5 IMS connector to block any > e-mail with a FROM address existing in the GAB? A sort of > anti-spoofing rule as we use on a router/Firewall to block > internal IP address coming from the outside? > > Any software that can do that? > > > > Daniel Bourque > Analyste - Centre d'Assistance Technique > Loto-Qu�bec > [EMAIL PROTECTED] > (514) 499-5056 > > > > _________________________________________________________________ > List posting FAQ: http://www.swinc.com/resource/exch_faq.htm > Archives: http://www.swynk.com/sitesearch/search.asp > To unsubscribe: mailto:[EMAIL PROTECTED] > Exchange List admin: [EMAIL PROTECTED] > _________________________________________________________________ List posting FAQ: http://www.swinc.com/resource/exch_faq.htm Archives: http://www.swynk.com/sitesearch/search.asp To unsubscribe: mailto:[EMAIL PROTECTED] Exchange List admin: [EMAIL PROTECTED]
