Hi Tom 3 small points My Set up as follows:- 1. Server in Bermuda, Win 2003 Standard, (MSDN, not pirate), no isa, vpn to Scotland. 2. Server in Scotland, Win 2000 Standard, behind ISA server, Exchange 2003 RC1 Mail works perfectly from all, (one), clients here in BDA. If I, however, install ISA on my server here in Bermuda, with or without the feature pack, create a gateway to gateway vpn to Scotland and connect, I can't send mail. I can receive it, I can read it, I just can't send it. Network timeout. Nothing in any logs here or there. So Isa must interfere with the vpn link somehow 3. Can't get my mapped network drives either, although the server can. Uninstall Isa and hey presto, it all works again including mapped drives. Any thoughts? Steve This E-Mail is confidential. It is not intended to be read, copied, disclosed or used by any person other than the recipient. Unauthorised use, disclosure, or copying is strictly prohibited and may be unlawful. Optimum Computer Solutions disclaims any liability for any action taken in connection of this E-Mail. The comments or statements expressed in this E-Mail are not necessarily those of Optimum Computer Solutions or its subsidiaries or affiliates. usermanager@xxxxxxxxxxxxxxx