Hi There,
I am running exchange 2010 and i had a " Catch all " mailbox setup so any email sent to *@domain.com would get caught in this mailbox using a policy even if the account did not exist. I went to remove the " catch all " mailbox as it was no longer needed but if someone external was to email " dsojio@domain.com " or spelt a users name wrong the external user will not receive a bounce back telling them that the address is invalid.
Any ideas?
Regards,
Jack