"to" field when sending email to multiple domains

Hi Guys,

this is the situation:

- exchange configured to accept email on 2 domains, A and B. Everything is working

- each user receives on both domain, but they have domain A as default.

problem

- if I send on domain B the user receives the email, but on his "to" field the email looks like to be sent to domain A instead of B

goal:

- I need to create a rule that if an email has been sent to domain B the email will be moved to a particular folder. Now I can't because from outlook prospective has been sent to domain A

thanks