I have just migrated from sbs2003 to sbs2008The exchange server is up and running however it wont accept emails from all domains that the previous 03 server wouldMost emails come in fineAny help in this matter would be GREATLy appreciated!Thanks in advanceWP

Any specific domains that are getting blocked? What is the bounce back that you are getting?Is this happening to all the user , migrated users and even newly created users on the new server?Raj

Internal or external emails? If it is external, then have you point the router to the same IP address?

Please use this website to test the mail flow. And also, please use Mail Flow Troubleshooter, see if we can get any related information We can also enable SMTP protocol logging on the receive connector, and monitor the issue Please also run ExBPA against the exchange server for health check For the exchange issue on the SBS 2008, please use “SBS 2008” newsgroup which would be the best place for the questionJames Luo TechNet Subscriber Support (http://technet.microsoft.com/en-us/subscriptions/ms788697.aspx) If you have any feedback on our support, please contact tngfb@microsoft.com