The topic discloses about utmost right method to move all Exchange 2003 user mailboxes into 2013 server using PST files. Without undergoing any transition & co-existence period or facing any technical hitch, now flawlessly conduct migrations.
As said by experts, 2003 server cannot be directly into 2013 server due to vast platform & functional changes. Therefore, an appropriate process should be followed to overcome all issues faced by users.
Right now, download software to completely move exchange 2003 to exchange 2013 when server is unavailable or removed. Experience the recommended way for migrating 2003 mailboxes by excluding all errors or exceptions!
Following enlisted issues are usually faced by users while shifting the 2003 server into newer 2013 server edition. But entire technical dilemma can be completely handled by the software ( which creates Exported PSTs for 2003 mailboxes ) to yield accurate error-free migration.