Dear Sir: One of our customer use the PIX Firewall515 version 5.12 with 6-interfaces. He use three interfaes: Internal, External and DMZ, and everything seem well. Only one problem: The SMTP mail server in DMZ and PIX handle SMTP (TCP/25) performance very bad........every smtp session delay more then 10sec in PIX. Thank you very much for your attention and kindness help. Look forward to hearing from you soon. Joseph Chuang ___________________________________ UPDATED Posting Guidelines: http://www.groupstudy.com/list/guide.html FAQ, list archives, and subscription info: http://www.groupstudy.com Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]