We have a single routing group with 2 back-end servers and a front-end server. The 2 back-ends (Exchange 2003) have the same smart host on the smtp virtual server for outgoing messages.
External messages to users on both servers work properly but a message from userA on serverA to userB on serverB gets stuck in a Q on serverA. ServerA also tries to send the message to the smarthost but after connecting never sends ths data (SMTP timeouts appear in log). I would have expected serverA to communicate directly with serverB as the address is in the AD.
Do we need a SMTP connector for this (if so how should it be configured) or is something else going on? Also, Exchnage shares address space with the smart host.
Thanks a lot,