Domino user is sending a message to a migrated user. The user is located in Exchange and has a mailbox. Smart Host configured from Domino to Exchange. You may see the following on the CMN MailConnector log file:
WARN CMN.logging [Proxy 24] - Message Number [24] on Thread [9] from Domino (111.11.111.1:50099) to Exchange (111.111.111.12:25): Received out of sequence DATA command: RCPT TO not received.
WARN CMN.logging [Proxy 24] - Message Number [24] on Thread [9] from Domino (111.11.111.1:50099) to Exchange (111.111.111.12:25): Skipping message processing because: The message size is 0. A 'recipient' email address is not known.
SMTP debug level log file may show the following:
DEBUG CMN.SmtpProtocol.logging [Proxy 24]: Message Number [24] on Thread [9] from Domino (111.11.111.1:50099) to Exchange (111.111.111.12:25): Received response: 550 5.7.1 Unable to relay
DEBUG CMN.SmtpProtocol.logging [Proxy 24]: Message Number [24] on Thread [9] from Domino (111.11.111.1:50099) to Exchange (111.111.111.12:25): Sending response: 550 5.7.1 Unable to relay
Domino Smart host was sending any address that it did not know to Exchange. For example, an address with @domain.com at the end, however Exchange only accepts the connection from @domainb.com.
RESOLUTION 1
Adjust the Receive Connector on the Exchange Hub Transport server to accept connection from domain.com.
RESOLUTION 2
This is for single name space scenario with SmartHost configuration
Adjust the Notes Person Document following fields
Replicate the changes.
