Unable to send to Exchange 2010 Public Folder after migration

Hi ,

We have migrated exchange 2003 server to 2010 and we migrated all public folders to new exchange 2010 server. But when attempting to send an e-mail to public folder 's e-mail address It says #550 5.2.0 RESOLVER.PF.Invalid; misconfigured public folder mailbox ##. Have you got any idea ? We can see all public folders in outlook client and owa.

Regards.