I have two domains with their own exchange servers with real world IP addresses mapped inside to a single ASA. One domain has an inside IP of x.x.5.2 and the other x.x.5.26
Mail will not travel between these two mail servers because, I think, the exchange servers are set to resolve from external DNS's. Sooo, when you send mail, it bounces because the external IPs are already mapped inside. It can't go outside and back inside to deliver mail. Tracert fails on first hop. If this is not something I can resolve via exchange 2003 and exchange 2007 and I should repost to a DNS area, please advise and I apologize.