I've migrated from Google Apps today and am having a problem receiving some emails.

The main domain is bxclinic.co.uk

I have set up a domain alias norfolkbiomechanicsclinic.co.uk

I have a group reception@bxclinic.co.uk which has two members.

Email to this group works perfectly.

No emails sent to the domain alias  reception@norfolkbiomechanicsclinic.co.uk arrive though 

So I am deducing that email alias domains don't route emails to groups. Is this correct, and how do I correct the situation?

There are many emails sent to this reception@norfolkbiomechanicsclinic.co.uk email address, and they are simply being lost at the moment. Where do they go?  

Thanks,

James