I have set up a an ISA 2006 server as a firewall / perimeter firewall and moved everything behind it and all the clients work except on 1 apple computer. It cant send pop email but can receive pop email. The ISA server is configured so all internal traffic is totally open to communicate outbound.
has anyone any ideas what me stop thins apple computer from receiving pop3 email. I have done all the usual things, made sure their email servers are up, dns is and gateways are correctly configured. It must be the firewall because it was working an hour earlier before them move to the ISA firewall.