I have a new SBS 2008 box I am setting up to replace an SBS 2003 domain.
email for one domain (the default) is set up and receiving correctly.
email for their second domain is not.
the two domains are xxx-lab.com and xxxlab.com (note xxx are to obfuscate the company name.. i don't run a lab for ... )
The primary xxx-lab.com is being recieved. The secondary is getting rejected with the following message "Google tried to deliver your message, but it was rejected by the recipient domain. We recommend contacting the other email provider for further information about the cause of this error. The error that the other server returned was: 550 550 5.7.1 Unable to relay (state 14)."