Firewall

[Chris Davies <davichri@cd-tech.biz>]

Hello,
new to this place, so Hi everyone.

I run a few servers on my network and am having problems with my firewall.
I am finishing up my imap server but I can't connect to it, the error my
firewall spits out is that it is a
    spoofed mac address (on the server side), I can connect to the local
address' but will not anywhere where it has to go through my fw
I run Debian 3.01(sarge) with Exim4, Dovecot imap w/maildir, also I have
4 virtual IPs on this server, for intra(extra)nets.
My firewall is Astaro Security Linux 6.
My question is what is a good firewall these days, because I have about
had it with this one.

Thanx
Chris