I can also live with the value of the attribute being either a reference or a mailbox directly. In the latter case I suggest that the name should not end on -c to prevent confusion. In <20040112074509.GC2101@arbeit.karrenberg.net> I wrote:
I am also in favour of adding the 'abuse-mailbox' attribute to the maintainer object in order to provide a quick way for deployment that does not involve changing a lot of inet*num objects. The referencing recommendation should be: "If the inet*num object for the address concerned has an 'abuse-mailbox', use this address *only* for sending abuse complaints. If such an attribute is not present, check the maintainer object for an 'abuse-mailbox' attribute and use this address *only* for sending abuse complaints."
Would you consider including that in your proposal? Daniel