hi friends I put firewall on my global ip than i want to use NAT to connect Mail server with firewall (that contain DNs MX and global ip) so can give me some idea about how can i use NAT for that is there any good link for NAT than please help me Yoga M Chaudahri Banasdairy(Amul) Palanpur -- This message has been scanned for viruses and dangerous content by MailScanner, and is believed to be clean.