I have ISA 2004 installed on one machine (192.168.1.2). It is connected to a doman whose domain controller is win2003 (192.168.1.3). ISA server is conencted ot the internet directly on a static ip (n.n.n.n).
Web browsing and filtering are working fine. I have MDaemon installed on DC, and it is unable to connect to any internet domains like mail.yahoo.com or mail.gmail.com or mail.anydomain.com.
I cannot telnet on port 25 or 110 either. If I connect to the internet directly then everything is working, the problem is on the ISA end. My mail host is mail.mydomain.com. If I try to connect to that using a mailserver or outlook or telnet, then I cannot. But if I connect to it using a browser then I am presented with a default page.
The same thing is with FTP as well.
I recently upgraded ISA 2000 to ISA 2004, and have started experiencing these problems. On 2000 you could do everything flawlessly but here I cant seem to figure out anything.
In my firewall setting in ISA i have enabled to allow all outbhound traffic from all networks to all networks.
I hope you understand my problem and would help me out.