>I wonder what people are using as firewalls to protect their Imail, postfix, >web & other servers. Any good news or horror stories would be >appreciated.
No different from anybody else not running IMGate: some are using commercial hardware firewalls, and some are using *nix routers configured as firewall, some are using both. Note that IMGate as an "SMTP proxy that enforces access policies" is actually part of your "firewall", which includes all your defensive practices for all protocols. On IMGate itself, for host security, people should harden *nix in the usual ways and run a packet filter like ipfilter, ipfw, netfilter. Len
