Hi Darrell Check the following setting on the SMTP virtual server - advanced delivery options "Attempt to deliver locally first". We fell foul of exactly this. HTH Regards Brian Parker Senior Computing Officer -----Original Message----- From: Darrell [mailto:darrellboyd@xxxxxxxxxxxxxxxxx] Sent: Tuesday, August 26, 2003 10:24 PM To: [ExchangeList] Subject: [exchangelist] Can only send email one way We have exchange 200 running in two sites. Both have t1's to the internet and a vpn runs between the sites. One domain and two exchange servers. The exchange servers are connected via routing group connectors We can send from site B to site A but can't send from site A to site B What could be causeing this problem... in the queue window it shows the connection between A-B as retry and the one from B-A as ready -