I have two Exchange Servers - Exchange Server 2003 and Exchange Server 2007. I want to forward any email that comes in Exchange Server 2003 to Exchange Server 2007. After getting an idea on how to forward an email to Exchange Server 2007, I will implement this technique to forward an email to Exchange Server 2010/2013. I have done all the basic steps like 'Raise Forest Functional Level' in domain.msc, 'Raise Domain Functional Level' in domain.msc, Adding forwarders in dnsmgmt.msc, Creating a new trust in domain.msc, Configuring 'Send Connectors' & 'Receive Connectors' & creating 'MX record' in both the domains.
I want to forward email from Exchange Server 2003 to Exchange Server 2007. I went to 'Exchange General' tab of 'Properties' of the user in ADUC in Exchange 2003, clicked on 'Delivery Options', selected 'Forward To', clicked on 'Modify', chose the user to forward emails to, checked on 'Deliver messages to both forwarding address and mailbox', clicked on 'OK'. Now, when I click on 'Apply' in the 'Properties' this message box appears:
A Constraint violation occurred. Facility LDAP Provider. ID No. 8007202f. Microsoft Active Directory Exchange Exchange Extension