What are the ports used when migrating a user mailbox from Exchange 2003 to Exchange 2007

At the beginning stages of testing the migration of Exchange 2003 to Exchange 2007 and the customer has stated that migrating mailboxes from Exchange 2003 to the Exchange 2007 server is taking to long.  Unfortunately the Exch 2003 and 2007 are separated by a 20 MB MPLS WAN link.

I've got 3 questions:
1.  What protocols are used when migrating (moving) an Exchange 2003 mailbox from a 2003 Exchange server to an Exchange 2007 mail server (within an Windows 2003 AD environment).
2.  Is it faster to export to PST - move an empty mail box to the 2007 - import pst....or move user with the exchange migration tool?
3.  How long should moving a 100MB user mail take?  Is there a method that can be used to calculate how long it should take?

Who is Participating?
aissimConnect With a Mentor Commented:
1 - The server's just use MAPI to facilitate this type of move, here's a real good 'behind the scenes' article: http://msexchangeteam.com/archive/2005/02/15/373021.aspx

2 - I've always preferred (thought) that moving via exchange is faster....doing one thing versus three just makes your life easier. Being able to just start the wizard and be done with it is certainly more efficient, but I can't say I've ever held a stopwatch to it.

3 - I've never seen a tried and true method for measuring the speed. Obviously it will all depend on hardware specs, network config, bandwidth availability, etc....Your best bet is to pick a time of day that you're trying to move this 100MB and time the move for a smaller mailbox...maybe 20MB?...to get an idea. (it certainly shouldn't take hours for 100MB though)
I think it is SMTP
zookeepa1Author Commented:
Thanks...exactly what I needed.
zookeepa1Author Commented:
Aissim...I sorry. The link refers to Exchange 2003.  Do you know a link that speaks to Exchange 2007?
Question has a verified solution.

Are you are experiencing a similar issue? Get a personalized answer when you ask a related question.

Have a better answer? Share it in a comment.

All Courses

From novice to tech pro — start learning today.