Exchange AD attributes in Hybrid Exchange Online Setup

When a user accounts is auto created in a Hybrid setup some necessary exchange attributes are missing from the user part in the on-premises AD.

So if you experience mail routing issues from on-prem to cloud users check these flags.

msExchRecipientDisplayType-2147483642
msExchRecipientTypeDetails2147483648
msExchRemoteRecipientType4
proxyaddressesSMTP:<user>@cloudshark.nl
smtp:<user>@cloudshark.mail.onmicrosoft.com
showInAddressBookCN=Default Global Address List,CN=All Global Address Lists,CN=Address Lists Container,CN=cloudshark,CN=Microsoft Exchange,CN=Services,CN=Configuration,DC=cloudshark,DC=nl
TargetAddressSMTP:<user>@cloudshark.mail.onmicrosoft.com
msExchELCMailboxFlags2
mailnicknamebest samaccountname zijn
msRTCSIP-PrimaryUserAddress  Primary SIP veld
sip:<user>@cloudshark.nl
 
Exchange AD attributes

Also a handy script to add Exchange move flags in case of Exchange moves, CSharp/TypeEnums.cs at master · felsokning/CSharp · GitHub

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