Exmerge for 5.5 to 2003 Upgrade

I'm looking to use exmerge to create PST files for all of my users (about 200) on my Exchange 5.5 server. I then want to import that data into the new Exchange 2003 server. Question: all of the usernames are different from one server to the next (we took this upgrade opportunity to finally standardize our login names). So, if we rename the PST files that Exch5.5 creates to the new usernames, is there an easy way to import on Exchange 2003? I'm just beginning my research on this, so I'll be looking for the answer too.

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jdhoover123Author Commented:
I'm guessing it has a lot to do with this: http://support.microsoft.com/kb/327304. But, are there any special things I need to keep in mind? Details? Things not discussed in the KB article.

Exmerge will work fine to import as long as the name of the pst file matches the alias of the user on the Exchange 2003 server.  What I would simply say is to keep in mind that the alias doesn't always match the username.  Also, another thing to keep in mind is that when you use Exmerge to import mail, you will have difficulties if you try and reply to old e-mail.


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jdhoover123Author Commented:
What kind of difficulties when replying to old emails? Error messages, or it just won't work?
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David WilhoitSenior Consultant, ExchangeCommented:
NDR's :-)

To clarify, I believe it is problems replying to internal e-mails, not external.  The problem lies with the old e-mails referencing a different legacyExchangeDN.  I think Kidego posted the KB article.

David WilhoitSenior Consultant, ExchangeCommented:
Externally, people sending to you from previously sent emails will most likely receive NDRs, especially if they have you listed in their contacts or address book. Deleting and recreating that info resolves it.

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