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We had an issue with some mail boxes and I have had to recreate some user mail boxes (not a Move Request). After doing this, people can't send to the new mail boxes.

I have read about the x500 record that needs updating when a mail box has been recreated but I am unsure what value to enter. I tried entering the value thrown back in the undeliverable message:

IMCEAEX-_O=FIRST+20ORGANIZATION_OU=EXCHANGE+20ADMINISTRATIVE+20GROUP+20+28FYDIBOHF23SPDLT+29_CN=RECIPIENTS_CN=Some+20Name@mydomain.local
#550 5.1.1 RESOLVER.ADR.ExRecipNotFound; not found ##

but this didn't work (I replaced the +20 with spaces etc).

So my final x500 is:

/o=First Organization/ou=EXCHANGE ADMINISTRATIVE GROUP (FYDIBOHF23SPDLT)/cn=Recipients/cn=some name@mydomain.local

In short, I'm sure the X500 will fix it but I'm not sure the value I should be using.

Note: using Get-Mailbix someuser | fl LagacyExchangeDN returns:

/o=First Organization/ou=Exchange Administrative Group (FYDIBOHF23SPDLT)/cn=Recipients/cn=Some User89f
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  • It's better to deal with just updating the GAL/OAB and making sure everyone also updates their OAB as well. Once you update the one on the Exchange server, you can test with OWA first to make sure client OAB updates will fix the issue. – TheCleaner Mar 17 '14 at 13:04
  • I'm sorry, I'm not an exchange (I just hack it together when it breaks). Could you provide some more information on updating GAL / OAB on the exchange server? p.s I am also Googling this now. – webnoob Mar 17 '14 at 13:13
  • I'll set it as an answer for you... – TheCleaner Mar 17 '14 at 13:15
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It's better to deal with just updating the GAL/OAB and making sure everyone also updates their OAB as well. Once you update the one on the Exchange server, you can test with OWA first to make sure client OAB updates will fix the issue

You can follow this article from Microsoft to do so:

How to Quickly Rebuild an Exchange 2010 Offline Address Book

Follow it down to the Outlook portion, but before you bother with updating an Outlook client, try Outlook Web Access first, and test and verify you can send to the new mailbox. Then mess with updating the Outlook clients (or just wait 24+ hours, and they will get it automatically).

P.S. Personally, when I've run into this in the past, I don't mess with the X.500 address at all. It is a little of a PITA at first, because after you do this new emails will work, but existing emails that original mailbox sent IF replied to will fail. This will be a helpdesk issue for a few days explaining that people will just need to create a new email to the "new" mailbox instead of replying to the old. After about a week, it pretty much becomes a non-existent issue.

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  • Worked a treat (that link was the first one I came to when Googling). This has saved a whole heap of issues so thanks very much. – webnoob Mar 17 '14 at 13:48
  • Very welcome... – TheCleaner Mar 17 '14 at 13:49

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