I have an Exchange Server 2010 Enterprise. Two domains, ie: abc.com and abcfoundation.org. Both were pop3 and hosted offsite. The abcfoundation.org email addresses will be going away. The main email addresses will be abc.com. I have changed the mx record for the foundation email addresses to pint to the new server. They are receiving emails and can send emails to anyone outside the organization. When they send to abc.com, the email goes into the users exchange mailbox, instead of going out to the pop3 host mailboxes. I plan to change the other mx record later, but need the other group to receive their email in their pop3 accounts. Help is urgently needed.