Currently our company is splitting into two companies, we have to move a large numbers of mailboxes which are located at different servers under the existing site.<br><br>We are planning to use Exmerge utility to move a group of mailboxes to the new site each time in a long period. And the old mailboxes are hidden. The new company had its own SMTP domain and it was already set as inbound domain in the existing site. The problem we found is that we cannot transfer the SMTP domain to the new site immediately for a long period project. We have to set the alternate recipient in the old mailbox to forward all SMTP mail to the new mailbox.<br><br>Is there any problem if we have same SMTP address both in the old and new mailbox? (For the case we only set SMTP inbound domain in the existing site) Once we have moved all mailboxes to new site, is it possible to set the SMTP inbound domain to the new site and force the directory replication to update this chance?<br><br>Anyone has experience on it and could give us advice.<br><br>Regards,<br>Woo