This would be nice. What I've been doing is having my members send me the headers and I've researched to see if the email did come from valid address. Then I setup a client list that I've applied to a Protocol Rule that Denies SMTP, SMTPS, SMTP Server and SMTPS Server to those in the client list. May not be the most efficient way of doing this but it has really cut down on the amount of Spam going into our mail server. Greg Foulks, MCP NewFound Technologies, Inc. http://www.nfti.com Email: greg.foulks@xxxxxxxx Voice: 614.318.5036 Fax: 614.318.5005 -----Original Message----- From: bullshitgnu@xxxxxxxxxxx [mailto:bullshitgnu@xxxxxxxxxxx] Sent: Tuesday, April 09, 2002 10:45 AM To: [ISAserver.org Discussion List] Subject: [isalist] Any chance if using SMTP blacklists? http://www.ISAserver.org I'm getting pretty feed up with SPAM and I am wondering if there is an esay way to enter/import lists with IP number published in black lists such as ORDB? ------------------------------------------------------ You are currently subscribed to this ISAserver.org Discussion List as: greg.foulks@xxxxxxxx To unsubscribe send a blank email to $subst('Email.Unsub')