22.214.171.124 Exchange Distinguished Name
The legacyExchangeDN attribute represents a distinguished name (DN) (4) of the entry. This DN (4) MUST be formatted as specified in [MS-OXOABK] section 126.96.36.199. This value MAY<4> be used as a proxy address for an entry, with the following format.
proxyAddressFromExchangeDN ::= "EX:" <Exchange DN> <Exchange DN> ::= ; The value of the LDAP attribute legacyExchangeDN