OID value: 2.16.840.1.113730.3.1.17
OID description:
Identifies a forwarding mail address. Mail to this recipient will be forwarded to the address provided.
For example:
mailForwardingAddress:bjensen at royalairways.com
URL for further info: http://developer.netscape.com/docs/manuals/directory/schema2/41/attri118.htm
See also the OID Repository website reference for 2.16.840.1.113730.3.1.17