Hi, I have an ISA server located on a remote site. Its running standard edition and its been setup as a web proxy, email publishing using exchange 5.5 behind the ISA. Everything is working fine on the server, but if I do a port scan on the system it shows SMTP and IMAP4 as open. I have taken a look at the settings on my own offices ISA server and it is setup exactly the same and these two ports are closed. Can anyone point me in the right direction of where to look as I have checked everything out Thanks in advance Paul Crisp Snr Network Support Analyst