I have two laptops that connect to the ISA protected network by use of an access point or a wireless router. The laptops have the firewall client installed and can access the network, share files, browse the net. Even when the laptops grab an IP off the router (the router is on the protected LAN) they still connect fine. The only issue is that POP3 access in not happening. Thunderbird, Outlook, Outlook Express all fail to send or receive. Plug them in to the network with a CAT5 and the email works with no problems. I am not sure exactly what the issue is and was hoping for someone to shine some light in my direction. The wireless AP and router have been assigned a static IP since before ISA 2004 was ever installed. Email might have worked in the past but now it does not. This problem has just been brought to my attention.
What is stopping the POP protocol when it wlows over the air?