Can anyone from these three carriers tell me if you're doing port blocking on the Windows file/print ports (135-139, 445 & 593) ? A client of ours (in the US), against our recommendation, still wants to connect to their Exchange server in the UK without a VPN. We're not blocking their IP#'s from anything but somewhere in between it's getting blocked. We use C&W directly and Verio/Level3 through a peer.
Thanks! william
