Cannot reply old email after PST & Exchange 2013 migration

Hi Guys,

I have an Windows 2003 small business server previously. We have migrated entire to a new AD domain and new exchange 2013 server

We have very little old users. We adopted the method of moving the mails from the old server to pst and transfer from pst to the new server.  

However, after the migration, when reading the old emails from the internal mail users (in the outlook connecting to the new server), the email is not able to reply with a valid email address

I connect the outlook to the old server and look at the properties of the users. They have X400 value.

Example X400:C=US;a= ;p=helmidom;o=exchange;s=administrator

Am I suppose to input this value into my user properties in my EAC in exchange 2013 ?


What value should I replace example my mail server FQDN is mail.domain.com?
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dnackAsked:
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Manpreet SIngh KhatraSolutions Architect, Project LeadCommented:
You need the LegacyExchangeDN or the Undeliverable and add it as X500 to the users properties as CustomEmailAddress

- Rancy
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Simon Butler (Sembee)ConsultantCommented:
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dnackAuthor Commented:
ok thanks let me try and update
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dnackAuthor Commented:
Hi Simon,

I have edited the proxyaddress as per blog above. However, it is still the same. When I open the outlook, click on the old mail, I look at the sender contact properties, the email information is blank. so when I reply, there is no address to reply

 Some how the sender information was removed when I transfer from the old mailbox to the pst.

Pls assist
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Simon Butler (Sembee)ConsultantCommented:
Never seen that before.
If the information was removed, then you would have to redo the export. Do you still have the PST files? Open one of those and see what the source is like.

Simon.
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dnackAuthor Commented:
Hi EE, problem not resolved. Pls close this case. Thank you
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dnackAuthor Commented:
problem not resolve. close the question
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