I have 2 domino domains (xyz.com and abc.xyz.com). When a mail from the internet is coming for a user in the xyz.com domain, it sometimes shows up on the console of the abc.xyz.com server and it shows an error "Error relaying message to domain xyz.com for user xxxxxxxxxx". Please note that I have added the domain xyz.com in the configuration document of the server for the abc.xyz.com domain as a domain that should be permitted to relay messages. How can I resolve this problem.