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 firstname.lastname@example.org
In short, I'm sure the X500 will fix it but I'm not sure the value I should be using.
Get-Mailbix someuser | fl LagacyExchangeDN returns:
/o=First Organization/ou=Exchange Administrative Group (FYDIBOHF23SPDLT)/cn=Recipients/cn=Some User89f