Packet filters and IP-restrictions in your server publishing rules are the simplest way for ISA to handle this. You may also want to look at locking down you SMTP server. Jim Harrison MCP(NT4, W2K), A+, Network+, PCG http://isaserver.org/authors/harrison http://jalojash.org/isatools Read the books! ----- Original Message ----- From: "Marc Lingenfelter" <marclingenfelter@xxxxxxxxxxxxxxxxxx> To: "[ISAserver.org Discussion List]" <isalist@xxxxxxxxxxxxx> Sent: Thursday, August 08, 2002 5:41 AM Subject: [isalist] Hijacked http://www.ISAserver.org It appears my system has been Hijacked by Spammers. How can I block all IPs from entering through ISA and then gradually allow selected IP and/or domains access. Marc Lingenfelter ------------------------------------------------------ You are currently subscribed to this ISAserver.org Discussion List as: jim@xxxxxxxxxxxx To unsubscribe send a blank email to $subst('Email.Unsub')