Hi, > Hi, we have the main domain.com and the subdomain child.domain.com. > There is oen Exchange organization and the Exchange server is running in > the main domain for all users. The child.domain.com is in another site of > AD connected over high-bandwidth VPN, so there is no problem with the > connection. I installed another Exchange server in the child.domain.com, > then tried to move some mailboxes over to the server to keep them local > for the users. However those users cannot receive any email internally. > The can receive and send email to the Internet, and they can as well send > it out to other users in the same organization. I restarted and checked > Recipient policies, routing engine and smtp service. I tried also to > create RGC connectors or even smtp connectors. None of them helped. The > same is happening also with any new mailbox created in that subdomain. > The mail sent from domain.com to chil.domain.com is piled up in the queue > on the exchange in the main domain. What are requirements to let this > email flow between domain.com and child.domain.com? Please let me know > some your ideas if you had such experience. I am assuming you have this situation: MAIN domain name: users have email addresses @domain.com CHILD domain name: users have email addresses @child.domain.com Have you set up a DNS MX record for the child domain? It is not sufficient to set up a MX record for the main domain name. You also need a MX record for each sub-domain that will be receiving email "@child.domain.com" HTH! Mike Salim