OID value: 2.16.840.1.101.2.2.1.3
OID description:
The alternate recipient
attribute is used to designate an X.400 alternate recipient
for a messaging user.
alternateRecipient ATTRIBUTE ::= { WITH SYNTAX DistinguishedName EQUALITY MATCHING RULE distinguishedNameMatch ID id-at-alternateRecipient }Defined in ACP 133
See also the OID Repository website reference for 2.16.840.1.101.2.2.1.3