Test01 LegacyExchangeDN
[PS] C:Windowssystem32>Get-Mailbox test01@test.com | fl EmailAddresses, LegacyExchangeDN EmailAddresses : {smtp:test01@test.de, SMTP:test01@test.com, smtp:test01-smtp@test.com} LegacyExchangeDN : /o=Test/ou=Exchange Administrative Group (FYDIBOHF23SPDLT)/cn=Recipients/cn=9aee20dc504d453781f27fdfade08396-test01