we use MIIS to exchange GAL sync, and sometimes mail address duplication happen by MIIS and user can not receive email. I would like to avoid email address duplication caused by MIIS. Is there any good way ?

If you are using Synch Engine only (MIIS) only solution is to implement part of a solution which will take care about uniqueness of a e-mail address. This can be done: - through external data source like SQL server where You will export all data and take care about generating unique name - through logic in flow or provisioning code which will create unique value based on input source.

If not an input source available and you are writing code, you can also look at Utils.FindMVEntries() as a possible way to determine if the name is used. It can be kind of "expensive" to do that, though. I've always found a way to avoid having to try it, since our ERP system generates unique IDs for everyone. Chris

yep, if you dont have a data source that maintains that uniquness you will have to create custom code and determine if it unique yourself. I have used FindMVEntries many times and I don't think it is that "expensive" since it only gets used on create or when something changes (or full sync). you could create a reusable function or just stick it right in the Import flow rule itself Dim bIsUnique As Boolean = True Dim mvEntries() As MVEntry mvEntry = Utils.FindMVEntries("mail", csentry("mail").StringValue) if mvEntry.count > 0 then try a new name end if

i have implemented a rule that checks for unique emailadresses, its done in the flow code.