Hello, We unfortunately deleted several users through Exchange 2013 ECP. We readded the user ID's but are now getting
IMCEAEX-_o=xxxxxxxxx+20xxxxxxx_ou=Exchange+20Administrative+20Group+20+28FYDIBOHF23SPDLT+29_cn=Recipients_cn=1f6713d4dc804e138e7e6210432390e5-Derek+20Yee@xxxxxxxxxxxx.com
Remote Server returned '550 5.1.1 RESOLVER.ADR.ExRecipNotFound; not found'
I believe this has to do with LegacyExchangeDN X.500 address. But I cannot seem to get this to work correctly. Only internal email addresses cannot email this user, external mail to this account works fine.
Any help would be appreciated.
Matthew