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white-space:normal;}Is legacyExchangeDN required for Exchange on-premises (2016) and should SDS be writing the field out?” This is mostly “out of the box” config for SDS.
Microsoft premier support says yes. A lot of other articles I can find say yes. Also when I look at another client running a much older version of SDS, I see that legacyExchangeDN is actually written for those contacts.