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Title
Dirsync: "Target object ... is a mailbox and will not be updated" -
Description
When running ODM Directory Sync you may notice that some objects are not being updated in the target. When reviewing the workflow sync log, you find the following example:
Target object CN=Test User1,OU=Users,OU=HR,OU=Departments,DC=sitraka,DC=com is a mailbox and will not be updated -
Cause
The target object has been deemed to be mailbox-enabled and the Directory Sync Template used for the workflow does not have the "ALLOW MAILBOX UPDATES" option selected. If ODM Directory Sync detects that a target object is mailbox-enabled, then it does not update the object, as a protective measure, as updating attributes on a mailbox-enabled object could disrupt mail flow.
A target object is deemed to be mailbox-enabled if any of the following are true:
For target on-premise objects:
msExchMailboxGuid and homeMDB contain a value
ORExchRecipientTypeDetails and ExchRemoteRecipientType contain values that indicate a User/Room/Equipment/Shared RemoteMailbox
For target cloud objects:RecipientTypeDetails with a value that indicates Group/Equipment/PublicFolder/Shared/Team/User/Room/....etc Mailbox -
Resolution
You can enable syncing for these objects by going to the hamburger menu (upper-left) | Templates | locate the template used in the workflow | Objects, and enabling "ALLOW MAILBOX UPDATES" option.
NOTE: Please keep in mind that when enabling the "ALLOW MAILBOX UPDATES" option, special consideration must be taken about which attributes will being updated/synced in the template attribute "Mapping" list. Updating the "mail", "proxyAddresses", "targetAddress", "msExchMailboxGuid", "ExchRecipientTypeDetails", "ExchRemoteRecipientType", "RecipientTypeDetails" and/or other mail-related attributes from source objects to target mailbox-enabled objects could have unintended or undesired consequences for mail flow. This is why these target mailbox-enabled objects are not updated in the target by default, as a precautionary measure.